Prosecution Insights
Last updated: April 19, 2026
Application No. 18/275,115

ELECTRICAL ENERGY STORAGE SYSTEM, METHOD FOR STORING AND RETRIEVING ELECTRICAL ENERGY, AND COMPUTER PROGRAMME

Non-Final OA §103
Filed
Jul 31, 2023
Examiner
SAAVEDRA, EMILIO J
Art Unit
2117
Tech Center
2100 — Computer Architecture & Software
Assignee
Hypnetic GmbH
OA Round
1 (Non-Final)
69%
Grant Probability
Favorable
1-2
OA Rounds
3y 3m
To Grant
95%
With Interview

Examiner Intelligence

Grants 69% — above average
69%
Career Allow Rate
345 granted / 498 resolved
+14.3% vs TC avg
Strong +26% interview lift
Without
With
+25.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
44 currently pending
Career history
542
Total Applications
across all art units

Statute-Specific Performance

§101
8.1%
-31.9% vs TC avg
§103
47.8%
+7.8% vs TC avg
§102
15.9%
-24.1% vs TC avg
§112
22.1%
-17.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 498 resolved cases

Office Action

§103
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . This office action is a response to an application filed 07/31/2023, in which claims 1-15 and 17-21 are pending and ready for examination. Information Disclosure Statement The Examiner has considered the references listed on the Information Disclosure Statement submitted on 07/31/2023. Priority Receipt is acknowledged of certified copies of papers submitted under 35 U.S.C. 119(a)-(d), which papers have been placed of record in the file. Specification Applicant is reminded of the proper language and format for an abstract of the disclosure. The abstract should be in narrative form and generally limited to a single paragraph on a separate sheet within the range of 50 to 150 words in length. The abstract should describe the disclosure sufficiently to assist readers in deciding whether there is a need for consulting the full patent text for details. The language should be clear and concise and should not repeat information given in the title. It should avoid using phrases which can be implied, such as, “The disclosure concerns,” “The disclosure defined by this invention,” “The disclosure describes,” etc. In addition, the form and legal phraseology often used in patent claims, such as “means” and “said,” should be avoided. Drawings The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they do not include the following reference sign(s) mentioned in the description: Reference no. K.22 in the instant application’s pre-grant publication (pgpub) paragraph 106. The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they include the following reference character(s) not mentioned in the description: Reference nos. K.24 and K.25 in Fig. 8. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Objections Claim 15 is objected to because of the following informalities: Claim 15 contains a period in the limitation “The method as claimed in claim 14, wherein the energy storage system comprises at least one of.” Followed by further limitations. A claim should only end in a period at the end of the claim. Appropriate correction is required. Claim Interpretation The following is a quotation of 35 U.S.C. 112(f): (f) Element in Claim for a Combination. – An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The following is a quotation of pre-AIA 35 U.S.C. 112, sixth paragraph: An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The claims in this application are given their broadest reasonable interpretation using the plain meaning of the claim language in light of the specification as it would be understood by one of ordinary skill in the art. The broadest reasonable interpretation of a claim element (also commonly referred to as a claim limitation) is limited by the description in the specification when 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is invoked. As explained in MPEP § 2181, subsection I, claim limitations that meet the following three-prong test will be interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph: (A) the claim limitation uses the term “means” or “step” or a term used as a substitute for “means” that is a generic placeholder (also called a nonce term or a non-structural term having no specific structural meaning) for performing the claimed function; (B) the term “means” or “step” or the generic placeholder is modified by functional language, typically, but not always linked by the transition word “for” (e.g., “means for”) or another linking word or phrase, such as “configured to” or “so that”; and (C) the term “means” or “step” or the generic placeholder is not modified by sufficient structure, material, or acts for performing the claimed function. Use of the word “means” (or “step”) in a claim with functional language creates a rebuttable presumption that the claim limitation is to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites sufficient structure, material, or acts to entirely perform the recited function. Absence of the word “means” (or “step”) in a claim creates a rebuttable presumption that the claim limitation is not to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is not interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites function without reciting sufficient structure, material or acts to entirely perform the recited function. Claim limitations in this application that use the word “means” (or “step”) are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. Conversely, claim limitations in this application that do not use the word “means” (or “step”) are not being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. This application includes one or more claim limitations that do not use the word “means,” but are nonetheless being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, because the claim limitation(s) uses a generic placeholder that is coupled with functional language without reciting sufficient structure to perform the recited function and the generic placeholder is not preceded by a structural modifier. Such claim limitation(s) is/are: “an electrical connection unit for connecting… a first energy converter that is … configured to convert … a second energy converter that is … configured to convert” in claim 1 and 14 Because this/these claim limitation(s) is/are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, it/they is/are being interpreted to cover the corresponding structure described in the specification as performing the claimed function, and equivalents thereof. If applicant does not intend to have this/these limitation(s) interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, applicant may: (1) amend the claim limitation(s) to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph (e.g., by reciting sufficient structure to perform the claimed function); or (2) present a sufficient showing that the claim limitation(s) recite(s) sufficient structure to perform the claimed function so as to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. Examiner Notes Examiner cites particular columns and line numbers in the references as applied to the claims below for the convenience of the applicant. Although the specified citations are representative of the teachings in the art and are applied to the specific limitations within the individual claim, other passages and figures may apply as well. It is respectfully requested that, in preparing responses, the applicant fully consider the references in entirety as potentially teaching all or part of the claimed invention, as well as the context of the passage as taught by the prior art or disclosed by the examiner. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 1, 2, 4-12, 14, 15, 17, and 19-21 are rejected under 35 U.S.C. 103 as being unpatentable over US Patent Publication No. 2012/0096845 to Ingersoll et al., (hereinafter Ingersoll), in view of US Patent Publication No. 2011/0062166 to Ingersoll et al., (hereinafter Ingersoll ‘166) Regarding claim 1, Ingersoll teaches an electrical energy storage system for injecting and withdrawing electrical energy (Power is stored or released from energy storage (i.e. injected and withdrawn), see P31-33, Ingersoll), comprising: a) an electrical connection unit for connecting the energy storage system to an electrical energy supply grid (Connection to grid, see Fig. 2 #206, P31-32, 47, 85, 106, Ingersoll), b) a first energy converter that is electrically connected to the electrical connection unit and is configured to convert electrical energy supplied via the energy supply grid into hydraulic energy that is provided via a hydraulic medium located in the energy storage system (Conversion of electrical energy to hydraulic energy, see P32 Fig. 2 #s278 and 271, P31-32, 47, 85, 106, Ingersoll), c) a second energy converter that is hydraulically connected to the first energy converter and is configured to convert the hydraulic energy provided by the first energy converter into gas pressure energy that is provided via a pressurized gas located in the energy storage system (Conversion of hydraulic energy to pressurized gas energy (e.g. compressed air) through a compression device, see P33, P31-32 Fig. 2 #201, P31-32, 47, 85, 106, Ingersoll), d) a pressurized gas storage unit that is connected to the second energy converter via a pressurized gas connection and is configured to store the gas pressure energy provided by the second energy converter in the form of compressed pressurized gas (Compressed gas is stored in gas storage chambers, see Fig. 2 #204, P32, p31-33, Ingersoll), further comprising at least one of: e) at least part of the second energy converter and/or of the pressurized gas storage unit has a phase change storage medium in which compression heat that arises when the pressurized gas is compressed is able to be stored, f) the second energy converter has at least one piston chamber in which a separator piston is mounted so as to be moveable, wherein the pressurized gas is separated from the hydraulic medium by the separator piston, wherein the separator piston has a base material and a thermal insulation material that has lower thermal conductivity than the base material, wherein a thermal insulation layer is formed between the pressurized gas and the hydraulic medium by the thermal insulation material, g) the second energy converter has at least one hydraulic cylinder and a pneumatic cylinder that is separate from the hydraulic cylinder and is mechanically coupled to the hydraulic cylinder (Pneumatic cylinder system 410/430 coupled to hydraulic actuator 472/474 with separate piston/cylinder section, see Fig. 4A, p113, p8-9, p57, 63, 65, Ingersoll). Ingersoll does not explicitly teach further comprising at least one of: e) at least part of a second energy converter and/or of a pressurized gas storage unit has a phase change storage medium in which compression heat that arises when a pressurized gas is compressed is able to be stored, f) a second energy converter has at least one piston chamber in which a separator piston is mounted so as to be moveable, wherein a pressurized gas is separated from a hydraulic medium by the separator piston, wherein the separator piston has a base material and a thermal insulation material that has lower thermal conductivity than the base material, wherein a thermal insulation layer is formed between the pressurized gas and the hydraulic medium by the thermal insulation material. However, Ingersoll ‘166 from the same or similar field of energy storage systems, teaches further comprising at least one of: e) at least part of a second energy converter and/or of a pressurized gas storage unit has a phase change storage medium in which compression heat that arises when a pressurized gas is compressed is able to be stored, f) a second energy converter has at least one piston chamber in which a separator piston is mounted so as to be moveable, wherein a pressurized gas is separated from a hydraulic medium by the separator piston, wherein the separator piston has a base material and a thermal insulation material that has lower thermal conductivity than the base material, wherein a thermal insulation layer is formed between the pressurized gas and the hydraulic medium by the thermal insulation material (A phase change material (medium) is used in view of heat in compression/expansion device for a pressurized energy storage, see P81, Ingersoll ‘166). It would have been obvious to a person of ordinary skill in the art before the filing date of the claimed invention to modify the energy storage as described by Ingersoll and incorporating a phase change medium, as taught by Ingersoll ‘166. One of ordinary skill in the art would have been motivated to do this modification in order to better address heat via heat transfer mechanisms that has an advantage of not requiring a heat exchanger (see P81, Ingersoll ‘166). Regarding claim 2, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll ‘166 teaches wherein at least part of a phase change storage medium is arranged on an outside of at least part of the second energy converter and/or of a pressurized gas storage unit, on which cooling fins and/or other cooling structures are arranged (A phase change material separate (outside) of an energy storage, and fins arranged on a compression unit, see P68, P81, Ingersoll ‘166). It would have been obvious to a person of ordinary skill in the art before the filing date of the claimed invention to modify the energy storage as described by the combination that includes Ingersoll and incorporating fins and a phase change medium, as taught by Ingersoll ‘166. One of ordinary skill in the art would have been motivated to do this modification in order to better address heat via heat transfer mechanisms that has an advantage of not requiring a heat exchanger during an compression expansion and to employ fins that can further improve thermal transfer (see p69, P81, Ingersoll ‘166). Regarding claim 4, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll further teaches wherein a compression heat stored is suppliable back to a pressurized gas during an expansion of a pressurized gas and/or during a withdrawal from a pressurized gas storage unit (Heat energy is received in receiving or releasing in a compression or expansion, see P30, Ingersoll). Ingersoll ‘166 further teaches a phase change storage medium (A phase change material (medium) is used in view of heat in compression/expansion device for a pressurized energy storage, see P81, Ingersoll ‘166). It would have been obvious to a person of ordinary skill in the art before the filing date of the claimed invention to modify the energy storage as described by Ingersoll and incorporating a phase change medium, as taught by Ingersoll ‘166. One of ordinary skill in the art would have been motivated to do this modification in order to better address heat via heat transfer mechanisms that has an advantage of not requiring a heat exchanger (see P81, Ingersoll ‘166). Regarding claim 5, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll further teaches wherein an energy storage system is designed without a heat exchanger in the region of a second energy converter (No heat exchanger near compression device, see Fig. 2 #201, Ingersoll. Also in Ingersoll ‘166 p81). Regarding claim 6, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll further teaches wherein a first energy converter is designed as a bidirectional energy converter by way of which either supplied electrical energy is convertable into hydraulic energy or hydraulic energy is convertable into electrical energy to be withdrawn from an energy storage system (System where energy can be stored or released to grid through a first converter, see p31-33, P31-32, 47, 85, 106, Fig. 2 #278, 271, Ingersoll). Regarding claim 7, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll further teaches wherein a second energy converter is designed as a bidirectional energy converter by way of which either supplied hydraulic energy is convertible into gas pressure energy or gas pressure energy to be withdrawn from a pressurized gas storage unit is convertable into hydraulic energy (System where energy can be stored or released to grid through a second converter hydraulic , see p31-33, P31-32, 47, 85, 106, Fig. 2 #201, Ingersoll). Regarding claim 8, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll further teaches wherein a second energy converter is connected to a hydraulic system, which has a tank in which a supply of hydraulic medium is stored (A hydraulic system has a supply source chambers, see p113, Ingersoll). Regarding claim 9, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll further teaches wherein a tank is hydraulically coupled to a second energy converter via a hydraulic pump (Hydraulic pump system in converting to energy storage, see P113, Fig. 2 #s 270, 271, 201, 278; p31-33, , Ingersoll). Ingersoll ‘166 further teaches a filter (A filter used, see P77, Ingersoll ‘166). It would have been obvious to a person of ordinary skill in the art before the filing date of the claimed invention to modify the energy storage as described by Ingersoll and incorporating a filter, as taught by Ingersoll ‘166. One of ordinary skill in the art would have been motivated to do this modification in order to better keep contaminants from interfering with a system and potentially cause damage or early wear and tear (see P77, Ingersoll ‘166). Regarding claim 10, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll ‘166 further teaches wherein a phase change storage medium is arranged around a tank and/or in a region of a first energy converter (A phase change material is used in around a compression/expansion device for a pressurized energy storage, see P81, Ingersoll ‘166). It would have been obvious to a person of ordinary skill in the art before the filing date of the claimed invention to modify the energy storage as described by Ingersoll and incorporating a phase change medium around a tank and/or converter, as taught by Ingersoll ‘166. One of ordinary skill in the art would have been motivated to do this modification in order to better address heat via heat transfer mechanisms that has an advantage of not requiring a heat exchanger (see P81, Ingersoll ‘166). Regarding claim 11, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll further teaches wherein a second energy converter is designed as a single-stroke system in which a maximum injection capacity is limited by an available capacity of the second energy converter for a hydraulic medium (Stroke of a compression single piston, with a specific volume of a cylinder, see p18, p20, Fig. 2, p68, Ingersoll). Regarding claim 12, the combination of Ingersoll and Ingersoll ‘166 teaches s all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll further teaches wherein a second energy converter is designed as a cyclically operated alternating-stroke system in which, at least when electrical energy is injected into the energy storage system, a hydraulic medium is conveyed cyclically back and forth between a first and at least one second piston accumulator of the second energy converter (Energy storage system includes two pistons with alternating opposite strokes as depicted, see Fig. 2, p17, Ingersoll). Regarding claim 14, Ingersoll teaches a method for injecting and withdrawing electrical energy by way of an energy storage system (Power is stored or released from energy storage (i.e. injected and withdrawn), see P31, Ingersoll) comprising: a) an electrical connection unit for connecting the energy storage system to an electrical energy supply grid (Connection to grid, see Fig. 2 #206, P31-32, 47, 85, 106, Ingersoll), b) a first energy converter that is electrically connected to the electrical connection unit and is configured to convert electrical energy supplied via the energy supply grid into hydraulic energy that is provided via a hydraulic medium located in the energy storage system (Conversion of electrical energy to hydraulic energy, see P32 Fig. 2 #s278 and 271, P31-32, 47, 85, 106, Ingersoll), c) a second energy converter that is hydraulically connected to the first energy converter and is configured to convert the hydraulic energy provided by the first energy converter into gas pressure energy that is provided via a pressurized gas located in the energy storage system (Conversion of hydraulic energy to pressurized gas energy (e.g. compressed air) through a compression device, see P33, P31-32 Fig. 2 #201, P31-32, 47, 85, 106, Ingersoll), d) a pressurized gas storage unit that is connected to the second energy converter via a pressurized gas connection and is configured to store the gas pressure energy provided by the second energy converter in the form of compressed pressurized gas (Compressed gas is stored in gas storage chambers, see Fig. 2 #204, P32, p31-33, Ingersoll), the method comprising: i)injecting electrical energy into the energy storage system by converting the electrical energy into hydraulic energy via the first energy converter and the hydraulic energy into gas pressure energy via the second energy converter and storing the gas pressure energy in the pressurized gas storage unit in the form of compressed pressurized gas (Power is stored or released from energy storage by way of a electrical to mechanical hydraulic system to gas pressure compression system to a gas storage chamber, see P31-33, Fig. 2, Ingersoll), j)withdrawing electrical energy from the energy storage system by decompressing compressed pressurized gas stored in the pressurized gas storage unit and generating hydraulic energy therefrom via the second energy converter or a further second energy converter, and converting the hydraulic energy into electrical energy via the first energy converter or a further first energy converter and outputting the electrical energy to the electrical energy supply grid or another electrical consumer (Power can be transmitted/released to the grid, which involves the system to essentially function in reverse with expansion instead of compression, thus gas storage, expansion, hydraulic mechanical system to electrical system for grid transmission, see p32, p22, 85, p47, P31-33, Fig. 4, p14 Ingersoll), the method further comprising at least one of: k) supplying thermal energy in the form of industrial waste heat and/or heat from solar panels to the energy storage system as further energy carrier, wherein the pressurized gas located in the pressurized gas storage unit is heated in the energy storage system by the thermal energy, l) wherein the pressurized gas circuit of the second energy converter is selectively connectable to the ambient atmosphere via at least one valve, and, when electrical energy is withdrawn from the energy storage system, cyclically opening and closing the at least one valve, wherein the at least one valve is closed in a respective cycle before a specific pressure value of the gas pressure in the pressurized gas circuit of the second energy converter that is above atmospheric pressure is reached, m) wherein the pressurized gas storage unit is selectively connectable to the pressurized gas circuit of the second energy converter via at least one non-return valve and/or directional valve, and comprising cyclically opening and closing the at least one non-return valve and/or directional valve, wherein the non- return valve and/or directional valve is opened or closed in a respective cycle before a specific pressure value of the gas pressure in the pressurized gas circuit of the second energy converter that is above atmospheric pressure is reached, n) the first energy converter has a hydraulic motor with an adjustable cylinder capacity, further comprising adjusting the cylinder capacity of the hydraulic motor to perform speed regulation and/or power regulation of the hydraulic motor (Volume of a hydraulic actuator ram piston adjusted to provide power, see p47, 85, p113, Ingersoll). Ingersoll does not explicitly teach further comprising at least one of: k) supplying thermal energy in the form of industrial waste heat and/or heat from solar panels to a energy storage system as further energy carrier, wherein a pressurized gas located in a pressurized gas storage unit is heated in the energy storage system by the thermal energy, l) wherein a pressurized gas circuit of a second energy converter is selectively connectable to ambient atmosphere via at least one valve, and, when electrical energy is withdrawn from an energy storage system, cyclically opening and closing the at least one valve, wherein the at least one valve is closed in a respective cycle before a specific pressure value of the gas pressure in the pressurized gas circuit of the second energy converter that is above atmospheric pressure is reached, m) wherein a pressurized gas storage unit is selectively connectable to a pressurized gas circuit of the second energy converter via at least one non-return valve and/or directional valve, and comprising cyclically opening and closing the at least one non-return valve and/or directional valve, wherein the non- return valve and/or directional valve is opened or closed in a respective cycle before a specific pressure value of the gas pressure in the pressurized gas circuit of the second energy converter that is above atmospheric pressure is reached. However, Ingersoll ‘166 from the same or similar field of energy storage systems, teaches further comprising at least one of: k) supplying thermal energy in the form of industrial waste heat and/or heat from solar panels to a energy storage system as further energy carrier, wherein a pressurized gas located in a pressurized gas storage unit is heated in the energy storage system by the thermal energy, l) wherein a pressurized gas circuit of a second energy converter is selectively connectable to ambient atmosphere via at least one valve, and, when electrical energy is withdrawn from an energy storage system, cyclically opening and closing the at least one valve, wherein the at least one valve is closed in a respective cycle before a specific pressure value of the gas pressure in the pressurized gas circuit of the second energy converter that is above atmospheric pressure is reached, m) wherein a pressurized gas storage unit is selectively connectable to a pressurized gas circuit of the second energy converter via at least one non-return valve and/or directional valve, and comprising cyclically opening and closing the at least one non-return valve and/or directional valve, wherein the non- return valve and/or directional valve is opened or closed in a respective cycle before a specific pressure value of the gas pressure in the pressurized gas circuit of the second energy converter that is above atmospheric pressure is reached (Solar heat can be used to heat in energy storage, see p92, P102, 52, Ingersoll ‘166). It would have been obvious to a person of ordinary skill in the art before the filing date of the claimed invention to modify the energy storage as described by Ingersoll and incorporating use of solar heat, as taught by Ingersoll ‘166. One of ordinary skill in the art would have been motivated to do this modification in order to better take advantage of available heat energy in the process of compression/expansion to provide greater efficiency by making use of available heat (see p92, P102, 52, Ingersoll ‘166). Claim 15 is rejected on the same grounds as claim 1. Claim 17 is rejected on the same grounds as claim 2. Claim 19 is rejected on the same grounds as claim 4. Claim 20 is rejected on the same grounds as claim 5. Claim 21 is rejected on the same grounds as claim 14. Claims 13 and 18 are rejected under 35 U.S.C. 103 as being unpatentable over Ingersoll, in view of Ingersoll ‘166, and in further view of US Patent Publication No. 2011/0030332 to Vandor (hereinafter Vandor) Regarding claim 3, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll ‘166 further teaches a thermally insulating material layer and the phase change storage medium is arranged in cavities remaining between the thermally insulating material layer, cooling fins and/or other cooling structures and the outside of at least part of the second energy converter and/or of the pressurized gas storage unit (A phase change material in a chamber cavity, where a chamber can be insulated, see P81, p99, Ingersoll ‘166 ) It would have been obvious to a person of ordinary skill in the art before the filing date of the claimed invention to modify the energy storage as described by the combination that includes Ingersoll and incorporating insulation, as taught by Ingersoll ‘166. One of ordinary skill in the art would have been motivated to do this modification in order to better maintain thermal isolation in an application requiring containment of thermal media (see p99, P81, Ingersoll ‘166). Ingersoll does not explicitly teach wherein fins and/or other cooling structures are covered with a thermally insulating material layer. However, Vandor from the same or similar field of energy storage teaches wherein fins and/or other cooling structures are covered with a thermally insulating material layer (Insulated fins, p9, p30, Vandor ) It would have been obvious to a person of ordinary skill in the art before the filing date of the claimed invention to modify the energy storage as described by the combination that includes Ingersoll and incorporating insulation, as taught by Vandor. One of ordinary skill in the art would have been motivated to do this modification in order to better maintain thermal isolation in an application needing containment of thermal media (see p9, p30, Vandor). Claim 18 is rejected on the same grounds as claim 3. Claim 13 is rejected under 35 U.S.C. 103 as being unpatentable over Ingersoll, in view of Ingersoll ‘166, and in further view of US Patent Publication No. 2015/0318702 to Treppmann et al., (hereinafter Treppmann) Regarding claim 13, the combination of Ingersoll and Ingersoll ‘166 teaches all the limitations of the base claim as outlined above, and are analyzed as previously discussed with regard to that claim. Ingersoll does not explicitly teach wherein several or all components of an energy storage system are accommodated in a housing that corresponds to a freight container according to ISO 668. However, Treppmann from the same or similar field of energy storage systems, teaches wherein several or all components of an energy storage system are accommodated in a housing that corresponds to a freight container according to ISO 668 (A energy storage system can be housed in a container system standardized according to ISO 668, see P14, Abs., Treppmann). It would have been obvious to a person of ordinary skill in the art before the filing date of the claimed invention to modify the energy storage as described by the combination that includes Ingersoll and incorporating a container according to a specified standard, as taught by Treppmann. One of ordinary skill in the art would have been motivated to do this modification in order to better provide a modular system that can permit easier mobility of components in a standardized dimensional module that is more suitable for faster transport (see P14, Abs., Treppmann). The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Ingersoll et al., US. Patent Publication No. 2012/0057998 teaches a compression/expansion device with fins. Samara-Rubio et al., US. Patent Publication No. 2013/0240068 teaches a compressed energy storage with phase change, air intake, and fins. Blieske, US. Patent Publication No. 2012/0057997 teaches a compressed energy storage with hydraulic and pneumatic cylinder. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to EMILIO J SAAVEDRA whose telephone number is (571)270-5617. The examiner can normally be reached M-F: 9:30am-5:30pm (EST). Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Robert E Fennema can be reached at (571) 272-2748. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /EMILIO J SAAVEDRA/Primary Patent Examiner, Art Unit 2117
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Prosecution Timeline

Jul 31, 2023
Application Filed
Nov 01, 2025
Non-Final Rejection — §103 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
69%
Grant Probability
95%
With Interview (+25.8%)
3y 3m
Median Time to Grant
Low
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