Prosecution Insights
Last updated: October 01, 2026
Application No. 18/968,163

WATER COOLING SYSTEM AND AIR SEPARATION DEVICE PROVIDED WITH SAME

Final Rejection §103§112
Filed
Dec 04, 2024
Priority
Dec 06, 2023 — JP 2023-206024 +1 more
Examiner
RUPPERT, ERIC S
Art Unit
Tech Center
Assignee
L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
OA Round
2 (Final)
60%
Grant Probability
Moderate
3-4
OA Rounds
11m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 60% of resolved cases
60%
Career Allowance Rate
467 granted / 781 resolved
At TC average
Strong +24% interview lift
Without
With
+24.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
42 currently pending
Career history
822
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
51.4%
+11.4% vs TC avg
§102
17.4%
-22.6% vs TC avg
§112
28.8%
-11.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 781 resolved cases

Office Action

§103 §112
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 . 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: “purification device” 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. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim 15 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Regarding claim 4, the recitation “the water buffer” lacks antecedent basis. Claim 6 is rejected for its dependency. Regarding claims 5-7, the limitation “purification device” invokes 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. However, the written description fails to disclose the corresponding structure, material, or acts for performing the entire claimed function and to clearly link the structure, material, or acts to the function. Therefore, the claim is indefinite and is rejected under 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph. NOTE: Examiner suggests “purification device” be amended to “purifier” to preclude this interpretation and rejection Applicant may: (a) Amend the claim so that the claim limitation will no longer be interpreted as a limitation under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph; (b) Amend the written description of the specification such that it expressly recites what structure, material, or acts perform the entire claimed function, without introducing any new matter (35 U.S.C. 132(a)); or (c) Amend the written description of the specification such that it clearly links the structure, material, or acts disclosed therein to the function recited in the claim, without introducing any new matter (35 U.S.C. 132(a)). If applicant is of the opinion that the written description of the specification already implicitly or inherently discloses the corresponding structure, material, or acts and clearly links them to the function so that one of ordinary skill in the art would recognize what structure, material, or acts perform the claimed function, applicant should clarify the record by either: (a) Amending the written description of the specification such that it expressly recites the corresponding structure, material, or acts for performing the claimed function and clearly links or associates the structure, material, or acts to the claimed function, without introducing any new matter (35 U.S.C. 132(a)); or (b) Stating on the record what the corresponding structure, material, or acts, which are implicitly or inherently set forth in the written description of the specification, perform the claimed function. For more information, see 37 CFR 1.75(d) and MPEP §§ 608.01(o) and 2181. Claim Rejections - 35 USC § 103 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. Claim(s) 1 is/are rejected under 35 U.S.C. 103 as being unpatentable over JPS6331271U, hereinafter FOR1, in view of Zhang (CN111998601A). Regarding claim 1, FOR1 teaches a water cooling system (see Fig. 1) comprising: a compressed gas cooler (air cooler 2) configured to cool compressed gas compressed by a compressor that takes in a gas being processed; a wet-type water cooler (cooling tower 1) into which condensed water generated in the compressed gas cooler is introduced as makeup water (via drain pipe 13); a cooling water pump (pump 8) configured to send cooling water discharged from the wet-type water cooler to a cold end of the compressed gas cooler to cool the compressed gas by means of the cooling water; a first condensed water line pipe (drain pipe 13) configured to send condensed water discharged from the compressed gas cooler; and a first flow rate regulating valve (see valve 9) provided in the first condensed water line pipe that is configured to regulate a flow rate of the condensed water. FOR1 does not teach a dry-type water cooler configured to cool the cooling water discharged from a warm end of the compressed gas cooler; a cooling water line pipe configured to send the cooling water discharged from the wet- type water cooler to the cold end of the compressed air cooler, wherein the cooling water line pipe is further configured to send the cooling water from the warm end of the compressed air cooler to the dry-type water cooler, and wherein the cooling water line pipe is further configured to send the discharged cooling water to the wet-type water cooler. Zhang teaches (see Fig. 4) a dry-type water cooler (see elements 2, 3, 14, 15) configured to cool the cooling water discharged from a warm end of the compressed gas cooler; a cooling water line pipe (8 & 11) configured to send the cooling water discharged from the wet- type water cooler (16) to the cold end of the compressed air cooler, wherein the cooling water line pipe (8 & 11) is further configured to send the cooling water from the warm end of the compressed air cooler to the dry-type water cooler, and wherein the cooling water line pipe is further configured to send the discharged cooling water to the wet-type water cooler. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have modified FOR1 to include the serially arranged dry cooler of Zhang, in order to conserve water (Page 10). Claim(s) 3-6, 9-10, 13-15 is/are rejected under 35 U.S.C. 103 as being unpatentable over JPS6331271U, hereinafter FOR1, in view of Zhang (CN111998601A) and Li (CN211261216U). Regarding claims 3-6, FOR1 as modified teaches the limitations of claim 1, and FOR1 does not teach a water buffer for storing the condensed water, a second condensed water line pipe configured to send condensed water from the water buffer to the wet-type water cooler; and a second flow rate regulating valve provided in the second condensed water line pipe that is configured to regulate the flow rate of the condensed water; a first controller configured to control the first flow rate regulating valve to control the amount of condensed water supplied, a first controller that controls the second flow rate regulating valve to control the amount of condensed water supplied. Li teaches (see Fig. 1) a water buffer (water storage tank 2) for storing the condensed water (via condensed water collector 1), a second condensed water line pipe (line with valve 10) configured to send condensed water from the water buffer to the wet-type water cooler (cooling tower 6); and a second flow rate regulating valve (valve 10) provided in the second condensed water line pipe that is configured to regulate the flow rate of the condensed water; a first controller (controller - Page 3) configured to control the first flow rate regulating valve (9) to control the amount of condensed water supplied, a first controller (controller - Page 3) that controls the second flow rate regulating valve (10) to control the amount of condensed water supplied. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have modified FOR1 to include the buffer tank, valve and controls of Li, in order to provide means to store the water for additional uses, such as irrigation and the like (Page 4). Regarding claim 9, FOR1 as modified teaches the limitations of claim 3, and FOR1 as modified further teaches the system is configured to store the condensed water in the water buffer (water storage tank 2 of Li) during the day while the dry-type water cooler (as modified above) is mainly operated, and wherein water demand of the wet-type water cooler is met during the night using the condensed water stored in the water buffer. Regarding claim 10, FOR1 as modified teaches the limitations of claim 1, and FOR1 as modified further teaches the compressed air cooler is configured to operate at a pressure higher than the cooling water line pipe, and the first flow rate regulating valve is disposed in the first condensed water line pipe to minimize energy losses resulting from reduced pressure when the condensed water is discharged from the compressed air cooler (FOR1 as modified is capable of operating in such a manner). Regarding claim 13, FOR1 as modified teaches the limitations of claim 1, and FOR1 as modified further teaches the water cooling system is configured to detect a drop in a water level of the wet-type water cooler and, in response, supply makeup water from the water buffer to the wet-type water cooler to maintain the water level within a control value (FOR1 as modified is capable of operating in such a manner). Regarding claim 14, FOR1 as modified teaches the limitations of claim 1, and FOR1 as modified further teaches the water cooling system is configured to detect a drop in a water level of the water buffer and, in response, increase an operating load of the dry-type water cooler to stabilize a temperature of the cooling water (FOR1 as modified is capable of operating in such a manner). Regarding claim 15, FOR1 as modified teaches the limitations of claim 3, and FOR1 does not teach a purification device disposed between the water buffer and the wet-type water cooler, wherein the purification device is configured to purify the condensed water. Li further teaches a purification device (4) disposed between the water buffer and a water consumer (7/8), wherein the purification device is configured to purify the condensed water. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have modified FOR1 to provide the purification device to the wet type water cooler of FOR1 as modified, in order to remove impurities in the water (abstract). Claim(s) 7 is/are rejected under 35 U.S.C. 103 as being unpatentable over JPS6331271U, hereinafter FOR1, in view of Zhang (CN111998601A) and Furlong (US20160348979A1). Regarding claim 7, FOR1 as modified teaches the limitations of claim 1, and FOR1 does not teach a second controller configured to control an operation rate of the dry-type water cooler in accordance with an increase or decrease in the cost of electric power. Furlong teaches a second controller (50 Fig. 1) configured to control an operation rate of the dry-type water cooler (dry cooler 142) in accordance with an increase or decrease in the cost of electric power (see Fig. 10 & ¶[0079]). Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have modified FOR1 to include the controls of Furlong, in order to reduce operating costs (¶[0079]). Claim(s) 8 is/are rejected under 35 U.S.C. 103 as being unpatentable over JPS6331271U, hereinafter FOR1, in view of Zhang (CN111998601A) and Klein (US6912859B2). Regarding claim 8, FOR1 teaches the water cooling system according to claim 1 for a compressor, however, does not explicitly teach the water cooling system is provided to an air separation device. Klein teaches wherein such a main compressor and cooling tower system (Fig. 1-2, with main air compressor cooler, condensate water collector, cooling tower) is provided to an air separation device (air separation plant – Col. 1, lines 35-40). Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have modified FOR1 to provide such a water cooling system to an air separation device, in order to improve efficiency and reduce cost to an air separation plant (Col. 11, lines 0-15). Claim(s) 16 is/are rejected under 35 U.S.C. 103 as being unpatentable over JPS6331271U, hereinafter FOR1, in view of Zhang (CN111998601A) and Benezech (FR2864911A1). Regarding claim 16, FOR1 as modified teaches the limitations of claim 1, and FOR1 does not teach a mist separator disposed in the compressed gas cooler, wherein the mist separator is configured to separate condensed water in the form of mist or droplets floating in the compressed gas. Benezech teaches a mist separator (19; Fig. 1-3) disposed in the compressed gas cooler, wherein the mist separator is configured to separate condensed water in the form of mist or droplets floating in the compressed gas. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have modified FOR1 to provide the mist separator of Benezech, in order to remove droplets contains in the flow (Page 4 of translation). Allowable Subject Matter Claims 11-12 and 17 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Response to Arguments Applicant’s arguments with respect to the claim(s) have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ERIC S RUPPERT whose telephone number is (571)272-9911. The examiner can normally be reached Monday - Friday 8 am - 4 pm. 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, Len Tran can be reached at 571-272-1184. 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. /ERIC S RUPPERT/Primary Examiner, Art Unit 3763
Read full office action

Prosecution Timeline

Dec 04, 2024
Application Filed
Jun 12, 2026
Non-Final Rejection mailed — §103, §112
Aug 13, 2026
Response Filed
Sep 01, 2026
Final Rejection mailed — §103, §112
Sep 28, 2026
Response after Non-Final Action

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

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Prosecution Projections

3-4
Expected OA Rounds
60%
Grant Probability
84%
With Interview (+24.3%)
2y 9m (~11m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 781 resolved cases by this examiner. Grant probability derived from career allowance rate.

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