Prosecution Insights
Last updated: July 17, 2026
Application No. 19/007,461

Zinc-based cladding steel plate

Non-Final OA §112
Filed
Dec 31, 2024
Priority
Oct 27, 2023 — CN 202311409499.7 +1 more
Examiner
CHRISTY, KATHERINE A
Art Unit
1784
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Shougang Group Co. Ltd.
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
11m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
260 granted / 345 resolved
+10.4% vs TC avg
Strong +35% interview lift
Without
With
+34.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
43 currently pending
Career history
383
Total Applications
across all art units

Statute-Specific Performance

§103
80.4%
+40.4% vs TC avg
§102
5.7%
-34.3% vs TC avg
§112
12.1%
-27.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 345 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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Claim Status Claims 1-10 are pending, claim 1 is independent. 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. Claims 5-7 are rejected under 35 U.S.C. 112(b), as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor, regards as the invention. Regarding claim 5, it is indefinite how the inhibition layer can be between the oxide layer and the zinc based coating when claim 1 from which claim 5 depends states that the zinc-based coating layer adjoined to the oxide layer. The verb adjoined means next to or joined directly together, so it is indefinite how a layer (inhibition layer) can be between these two layers. Regarding claims 6 and 7, these claims are rejected for their incorporation of the above due to their respective dependencies on claim 5. Allowable Subject Matter Claims 1-4 and 8-10 are allowed and claims 5-7 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b), set forth in this Office action. The following is a statement of reasons for the indication of allowable subject matter: and an examiner’s statement of reasons for allowance: Kawakami et al. (CN113195776 A, herein referring to the Google Patents May 26, 2026 machine translation), hereinafter Kawakami (original and translation provided herewith). Kawakami teaches a hot-dip galvanized steel sheet with a zinc coating layer on the surface of the steel sheet with an internal oxide layer located between the surface layer of the steel sheet and the steel sheet base material portion (claims 1 and 2), the internal oxide layer is SiO2 and includes grain boundary oxides and intra-grain (intra crystalline) oxides (Pg. 3 [13]). Kawakami does not teach or suggest, alone or in combination with the prior art, a thickness of the oxide layer ranging from 3-10 microns nor a mass fraction of the grain boundary silicon oxide in the oxide layer of 4.0-8.0%. Further, Kawakami does not teach substantially identical processing to that which applicant discloses as producing these properties. Applicant teaches the criticality of three different dew point ranges (table 4; [0109]-[0116]) to forming the desired oxide layer. Kawakami does not teach a dew point criticality, let alone three different dew points. Therefore, the coated steel of Kawakami does not necessarily have the claimed properties. As Kawakami does not teach a substantially identical process to that applicant teaches is critical to forming the claimed oxide layer parameters, it cannot be concluded that this is inherently present. Thus, the claims are allowed/would be allowable. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KATHERINE CHRISTY whose telephone number is (303)297-4363. The examiner can normally be reached Monday-Thursday, 7am-4pm MT. 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, Humera Sheikh can be reached at 571-272-0604. 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. /KATHERINE A CHRISTY/Primary Examiner, Art Unit 1784
Read full office action

Prosecution Timeline

Dec 31, 2024
Application Filed
Jun 01, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12680153
SUPER CQHT HIGH TEMPERATURE ALLOY-RESISTANT ALUMINIZED STEEL WITH MODERATE FORMABILITY
3y 4m to grant Granted Jul 14, 2026
Patent 12674227
ALUMINUM PLATED STEEL SHEET, THERMOFORMED COMPONENT, AND MANUFACTURING METHODS
2y 11m to grant Granted Jul 07, 2026
Patent 12674221
HIGH-STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING SAME
2y 4m to grant Granted Jul 07, 2026
Patent 12662740
STEEL SHEET FOR HOT STAMPING AND HOT-STAMPED MEMBER
2y 9m to grant Granted Jun 23, 2026
Patent 12655519
REFRACTORY CARBIDE LAYER
3y 0m to grant Granted Jun 16, 2026
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
75%
Grant Probability
99%
With Interview (+34.8%)
2y 5m (~11m remaining)
Median Time to Grant
Low
PTA Risk
Based on 345 resolved cases by this examiner. Grant probability derived from career allowance rate.

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