Prosecution Insights
Last updated: July 17, 2026
Application No. 18/552,031

NITRIDING TREATMENT METHOD FOR STEEL COMPONENT

Non-Final OA §102§112
Filed
Sep 22, 2023
Priority
Mar 31, 2021 — JP 2021-059837 +1 more
Examiner
ROE, JESSEE RANDALL
Art Unit
1759
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Parker Netsushori Kogyo Co. Ltd.
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
3m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allowance Rate
989 granted / 1297 resolved
+11.3% vs TC avg
Moderate +8% lift
Without
With
+7.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
53 currently pending
Career history
1339
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
70.2%
+30.2% vs TC avg
§102
1.9%
-38.1% vs TC avg
§112
14.8%
-25.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1297 resolved cases

Office Action

§102 §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 . Status of the Claims Claims 1-14 are pending wherein claims 1-14 are currently under examination. The restriction requirement mailed on February 25, 2026 is withdrawn in view of the Applicant’s arguments. 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. Claims 1-14 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. Regarding claim 1, the phrase “i.e.” which is synonymous with "for example" renders the claim indefinite because it is unclear whether the limitation(s) following the phrase are part of the claimed invention. See MPEP § 2173.05(d). Claim 4 recites the limitation "the three types of gases" in line 10. There is insufficient antecedent basis for this limitation in the claim. Claim 5 recites the limitation "the three types of gases" in line 10. There is insufficient antecedent basis for this limitation in the claim. Note: amendment to claim 5 to make this two types of gas may render claim 5 and claim 6 substantial duplicates. Examiner Interpretation The Examiner considers the recitation that the limitations after “i.e.” to be limitations that are not required and the claim only requires a nitriding process Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim 1 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by Michalski et al. (Nitriding without the compound layer and with continuous in-process variation of the nitriding potential). In regard to claim 1, Michalski et al. discloses three-stage nitriding of 38HMJ steel (page 50). Allowable Subject Matter Claims 1-14 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. The following is a statement of reasons for the indication of allowable subject matter: In regard to claim 1, Paulus et al. (‘326) discloses nitriding components of fuel injection systems made of steel comprising nitriding at a temperature between 520 and 570°C at a first high nitriding potential between 1 and 10 and then nitriding at a temperature between 520 and 570°C at a second lower nitriding potential between 0.2 and 0.4 [0036-0040]. However, Paulus et al. (‘326) fails to specify three nitriding steps where the nitriding potential is between 0.10 to 1 for the first nitriding step; the nitriding potential for the second step is between 0.3 to 10 for the second nitriding; and the nitriding potential for the third step is between 0.26 to 0.60 for the third step of nitriding wherein the nitriding potential for the second step is higher than the first step and the nitriding potential for the third step is lower than the second step. Likewise, Michalski et al. teaches a continued decrease in nitriding potential whereas claim 1 has an lowering of nitriding potential and then an increase in nitriding potential (page 50). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Michalski, Jerzy, et al. "Nitriding without the compound layer and with continuous in-process variation of the nitriding potential." International Journal of Microstructure and Materials Properties 2.1 (2007): 45-53. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Jessee Roe whose telephone number is (571)272-5938. The examiner can normally be reached Monday thru Friday 7:30 am to 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, Curt Mayes can be reached at 571-272-1234. 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. /JESSEE R ROE/Primary Examiner, Art Unit 1759
Read full office action

Prosecution Timeline

Sep 22, 2023
Application Filed
May 12, 2026
Non-Final Rejection mailed — §102, §112 (current)

Precedent Cases

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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
76%
Grant Probability
84%
With Interview (+7.8%)
3y 1m (~3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1297 resolved cases by this examiner. Grant probability derived from career allowance rate.

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