Prosecution Insights
Last updated: April 19, 2026
Application No. 17/775,672

RADIANT HEAT PROTECTION DEVICE, RADIANT HEAT PROTECTION METHOD, AND SERVICE VEHICLE

Non-Final OA §112
Filed
May 10, 2022
Examiner
KIM, CHRISTOPHER S
Art Unit
3752
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Mitsubishi Heavy Industries Ltd.
OA Round
3 (Non-Final)
63%
Grant Probability
Moderate
3-4
OA Rounds
3y 4m
To Grant
84%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allow Rate
705 granted / 1118 resolved
-6.9% vs TC avg
Strong +21% interview lift
Without
With
+21.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
46 currently pending
Career history
1164
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
22.6%
-17.4% vs TC avg
§102
33.8%
-6.2% vs TC avg
§112
38.3%
-1.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1118 resolved cases

Office Action

§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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on May 20, 2025 has been entered. The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claim Rejections - 35 USC § 112 Claims 1, 2, 4-10 are 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. Claim 1 recites the limitation “a control device configured to cause the coolant to be supplied to the coolant retainer from the coolant feed device intermittently at regular intervals” in lines 9-10. The intervals limited by the term “regular intervals” is indefinite. It is uncertain what intervals are defined/limited by the term “regular intervals.” The specification provides no guidance to determine the intervals defined by “regular intervals.” Claim 1 recites the limitation “a control device configured to cause the coolant to be supplied to the coolant retainer from the coolant feed device intermittently at regular intervals” in lines 9-10. The specification fails to recite structure to enable the control device to cause the coolant to be supplied to the coolant retainer from the coolant feed device intermittently at regular intervals. Presumably, not all control devices are capable of perform such function. The structure recited by the claim is not commensurate in scope with the function required by the claim. Claim 6 recites the limitation “spraying a coolant which is water intermittently at regular intervals from a spray nozzle” in lines 4-5. The intervals limited by the term “regular intervals” is indefinite. It is uncertain what intervals are defined/limited by the term “regular intervals.” The specification provides no guidance to determine the intervals defined by “regular intervals.” Response to Arguments Applicant’s arguments with respect to claim(s) 1, 2, 4-10 have been considered but are moot based on the new grounds of rejections. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHRISTOPHER S KIM whose telephone number is (571)272-4905. The examiner can normally be reached M-F 7:30-3:30. 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, Arthur O Hall can be reached on (571) 270-1814. 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. /CHRISTOPHER S KIM/Primary Examiner, Art Unit 3752 CHRISTOPHER S. KIM Examiner Art Unit 3752 CK
Read full office action

Prosecution Timeline

May 10, 2022
Application Filed
Aug 20, 2024
Non-Final Rejection — §112
Nov 14, 2024
Applicant Interview (Telephonic)
Nov 14, 2024
Examiner Interview Summary
Nov 26, 2024
Response Filed
Jan 29, 2025
Final Rejection — §112
Apr 21, 2025
Examiner Interview Summary
Apr 21, 2025
Applicant Interview (Telephonic)
Apr 24, 2025
Request for Continued Examination
Apr 25, 2025
Response after Non-Final Action
May 20, 2025
Response Filed
Jan 25, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12599730
SYSTEM AND METHOD FOR A FLUID DISPERSAL CARTRIDGE
2y 5m to grant Granted Apr 14, 2026
Patent 12594565
SPRAY GUN WITH ADJUSTABLE ATOMIZER AND REMOVABLE NOZZLE BODY
2y 5m to grant Granted Apr 07, 2026
Patent 12589399
WATER DISCHARGE DEVICE
2y 5m to grant Granted Mar 31, 2026
Patent 12551741
RIDGE SEAL FOR FIRE SPRINKLER
2y 5m to grant Granted Feb 17, 2026
Patent 12544785
APPARATUS FOR PRODUCING RECONFIGURABLE WALLS OF WATER
2y 5m to grant Granted Feb 10, 2026
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
63%
Grant Probability
84%
With Interview (+21.2%)
3y 4m
Median Time to Grant
High
PTA Risk
Based on 1118 resolved cases by this examiner. Grant probability derived from career allow rate.

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