Prosecution Insights
Last updated: July 17, 2026
Application No. 18/305,843

SYSTEM AND METHOD FOR INTEGRATED WATER TREATMENT AND COOLING IN THE STEEL INDUSTRY

Non-Final OA §103§112
Filed
Apr 24, 2023
Examiner
MCGUTHRY BANKS, TIMA MICHELE
Art Unit
1733
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Saudi Arabian Oil Company
OA Round
2 (Non-Final)
82%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 82% — above average
82%
Career Allowance Rate
955 granted / 1170 resolved
+16.6% vs TC avg
Minimal +2% lift
Without
With
+2.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
58 currently pending
Career history
1231
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
52.4%
+12.4% vs TC avg
§102
6.2%
-33.8% vs TC avg
§112
33.5%
-6.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1170 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 . Drawings The drawings are objected to under 37 CFR 1.83(a). The drawings must show every feature of the invention specified in the claims. Therefore, the following must be shown or the feature(s) canceled from the claim(s): The electric arc furnace steelmaking plant connected with the electric energy production system. The electric energy production system, e.g. in Figure 2, is connected to the wastewater treatment system. Returning cooled treated water to the electric arc furnace steelmaking plant via a valve-controlled flow line No new matter should be entered. 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. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered, and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. 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 Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL - The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1-4, 6-8, and 10-14 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. In Claim 1, there is no support in the specification as originally filed for an electric arc furnace (EAF) steelmaking plant to be connected with the electric energy production system. The EAF system is in the steelmaking plant and not identified as “an electric arc furnace steelmaking plant.” There is support in the specification for converting solar energy into electricity and using generated electricity to operate a conventional EAF system in the steelmaking plant [0032], though not in the drawings as described above. Additionally, there is no support in the specification for returning cooled treated water to the electric arc furnace steelmaking plant via a valve-controlled flow line. Claim Rejections - 35 USC § 103 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claims 1, 3, 7, and 8 are rejected under 35 U.S.C. 103 as being unpatentable over Song et al (US 11,668,266 B2) in view of Cintron et al (US 2023/0175088 A1) Song teaches a total recycling system of capturing, conversion, and utilization of flue gas from factory, power plant and refinery as represented below in the annotated drawing: PNG media_image1.png 788 708 media_image1.png Greyscale The system treats flue gas emitted from plants including steel plants (column 3, lines 21-23). The dust removal unit includes a wastewater heat recovery device. Pure flue gas is conveyed into the capture subsystem and desulfurized wastewater is treated (column 5, lines 22-43). The water recovery unit recovers water and residual heat from the flue gas. The residual heat is used for heat pump power generation or steam turbine power generation, and the water is stored in the water tank for process water. The water and heat recovery device can be respectively applied to the flue gas source, the combined decontamination and dust removal unit, the capture subsystem, the conversion subsystem, the utilization subsystem, and the energy source subsystem. Condensed water reads on a water-cooling system (column 7, lines 14-39). The energy subsystem satisfies the electricity and heat consumptions of each subsystem and includes a solar power generation device. The system uses residual heat of each subsystem and waste heat recovery (column 12, line 49 to column 13, line 3). However, Song does not teach the steel plant is an electric arc furnace steelmaking plant or returning cooled treated water to the electric arc furnace steelmaking plant via a valve-controlled flow line as claimed. Regarding the electric arc furnace steelmaking plant, Cintron et al teaches systems for producing iron as represented below in the drawing: PNG media_image2.png 562 690 media_image2.png Greyscale Figure 3 teaches an electric arc furnace and one or more other downstream steel processing operations. [0038]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention for the steel plant in Song to include an electric arc furnace, since Cintron et al teaches during steel making, electric arc furnaces produce an improved steel product [0131]. Regarding returning cooled treated water to the electric arc furnace steelmaking plant via a valve-controlled flow line, Cintron et al teaches water is used for a water scrubber and a clarifier [0129] and electrolyzer [0129]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to control the flow of water to the system of Cintron et al from the system in Song with a valve, since controlling a flow line with a valve allows for managing or regulating the amount of water from Song to operate the scrubber, clarifier, or electrolyzer in Cintron et al. Regarding Claim 3, water is stored for use (column 19, line 35). Regarding Claims 7 and 8, the energy source subsystem satisfies the electricity consumption of each subsystem with self-sufficiency (column 12, lines 49-55). Regarding the limitations of “proportionately” in Claim 7 and “disproportionately” in Claim 8, this reads on intended use. Language in the claim that suggests or makes optional but does not require steps to be performed or does not limit a claim to a particular structure does not limit the scope of a claim or claim limitation, for example statements of intended use or field of use. See MPEP § 2106. Claim 2 is rejected under 35 U.S.C. 103 as being unpatentable over Song in view of Cintron et al as applied to claim 1 above, and further in view of CN 106440145 A, based on the machine translation. Song in view of Cintron et al discloses the invention substantially as claimed. Song in view of Cintron et al teaches the water recovery unit is a double-pipe water and heat recovery device condenses water for storage, which reads on an indirect (double-pipe) system. However, Song in view of Cintron et al does not teach an indirect evaporative based water cooling system as claimed. CN 106440145 A (CN ‘145) teaches a three-channel closed indirect evaporation cooling water chilling unit (abstract) with double pipe channels (FIG 9). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to use the cooling water chilling unit of CN ‘145 as the condensing unit in Song in view of Cintron et al, since CN ‘145 teaches ensuring water quality (abstract). Claim 4 is rejected under 35 U.S.C. 103 as being unpatentable over Song in view of Cintron as applied to claim 1 above, and further in view of Torrens Rasal (US 2011/0315137 A1). Song in view of Cintron et al discloses the invention substantially as claimed. However, Song in view of Cintron et al does not teach a plurality of solar thermal collectors as claimed. Torrens Rasal teaches a solar thermal collector (abstract). Although Torrens Rasal does not teach a plurality of solar thermal collectors, mere duplication of parts has no patentable significance unless a new and unexpected result is produced. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to use the solar thermal collector of Torrens Rasal for solar power generation in Song in view of Cintron et al, since Torrens Rasal teaches a solar thermal collector that allows the maximum temperature to be self-limited by means of a completely autonomous system, which prevents overheating in a reliable manner without electrical components [0002]. Claims 6 and 10-14 are rejected under 35 U.S.C. 103 as being unpatentable over Song in view of Cintron as applied to claim 1 above, and further in view of O’Donnell et al (US 2022/0170388 A1). Song in view of Cintron et al discloses the invention substantially as claimed. Regarding Claim 6, Song in view of Cintron et al teaches using market-oriented electric energy and heat energy as the initial system starting energy (column 25, lines 38-42) but Song in view of Cintron et al does not teach a power grid. Regarding Claim 10, Song in view of Cintron et al does not teach valves between the solar thermal system and electric energy production system. Regarding Claim 11, Song in view of Cintron et al teaches storage for condensed water as a water tank but does not teach valves between the water-cooling system and cooling water storage tank. Regarding Claim 12, Song in view of Cintron et al does not teach valves for controlling transmission of electricity in the system. Regarding Claim 13, excess energy is stored in the form of electrolytic hydrogen and burning hydrogen gas (column 12, lines 59-65), which reads on the description of a power grid, but does not teach valves between the electric energy production system and the power grid. Regarding Claim 14, Song in view of Cintron et al does not teach valves between the electric energy production system and the water-cooling system as claimed. O’Donnell et al teaches a thermal energy storage system (abstract). The storage system can be used in steelmaking processes [0904]. The thermal energy storage system is coupled to an input energy source that may include one or more sources of electrical energy. The source includes renewables such as solar and another such as natural gas or coal. The sources are provided to the thermal energy storage system via infrastructure including one or more electrical conductors [0152]. The sources provide electricity that is variable in availability or price because the conditions for generating the electricity are varied. Input electricity may be received from the existing power grid [0162]. The thermal storage control system includes valves associated with thermal storage assemblages including switches for connecting input energy from energy sources such as a solar field or wind farm [0220]. The control system controls valves to move between an open position and a closed position to optimize the use of electric power and maintain voltage and current flows [0158]. A blowdown valve allows release of water or steam whose temperature or quality is below the temperature or quality required [0382]. Other components may include other steam generator components such as a water pump, valves, an emergency pressure relief valve, etc. [0502]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to use the thermal energy storage system of O’Donnell et al, including the power grid (Claim 6) and valves amongst the solar thermal system, energy production system, water cooling and water storage, transmission of electricity, and power grid (Claims 10-14) in the system of Song in view of Cintron et al, since O’Donnell teaches designing variable renewable electricity that can be rapidly charged at low cost, supply dispatchable, continuous energy as required by various industrial applications despite variations in variable renewable electricity supply, and that facilitate efficient control of charging and discharging of the energy storage system [0035]. Response to Arguments Applicant's arguments filed 04/24/2023 have been fully considered but they are not persuasive. The amendments to the claims did not necessitate applying new references. The rejection under 35 U.S.C. 102(a)(1) was withdrawn based on the amendment to Claim 1, but the combination of Song and Cintron et al was applied under 35 U.S.C. 103. Regarding applicant’s arguments for the combination of Song and Cintron et al, the rejection above addresses the water-cooling system and the electric arc furnace steelmaking plant. 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 Tima M. McGuthry-Banks whose telephone number is (571)272-2744. The examiner can normally be reached Monday through Friday, 7:30 am to 4:00 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, Keith D. Hendricks can be reached at (571) 272-1401. 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. Tima M. McGuthry-Banks Primary Examiner Art Unit 1733 /TIMA M. MCGUTHRY-BANKS/Primary Examiner, Art Unit 1733
Read full office action

Prosecution Timeline

Apr 24, 2023
Application Filed
Nov 17, 2025
Non-Final Rejection mailed — §103, §112
Dec 08, 2025
Interview Requested
Dec 16, 2025
Examiner Interview Summary
Dec 16, 2025
Applicant Interview (Telephonic)
Feb 03, 2026
Response Filed
Apr 22, 2026
Final Rejection mailed — §103, §112
Jun 16, 2026
Response after Non-Final Action

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Prosecution Projections

2-3
Expected OA Rounds
82%
Grant Probability
84%
With Interview (+2.2%)
2y 4m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1170 resolved cases by this examiner. Grant probability derived from career allowance rate.

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