Prosecution Insights
Last updated: October 01, 2026
Application No. 18/769,533

METHOD FOR PREPARING GENERAL-PURPOSE CEMENT

Non-Final OA §112
Filed
Jul 11, 2024
Priority
Feb 24, 2024 — CN 202410204516.1
Examiner
ABU ALI, SHUANGYI
Art Unit
Tech Center
Assignee
Hunan Xiangchu Xianlu Environmental Protection Technology Co. Ltd.
OA Round
1 (Non-Final)
45%
Grant Probability
Moderate
1-2
OA Rounds
1y 11m
Est. Remaining
83%
With Interview

Examiner Intelligence

Grants 45% of resolved cases
45%
Career Allowance Rate
487 granted / 1074 resolved
-14.7% vs TC avg
Strong +38% interview lift
Without
With
+37.8%
Interview Lift
resolved cases with interview
Typical timeline
4y 1m
Avg Prosecution
51 currently pending
Career history
1127
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
56.2%
+16.2% vs TC avg
§102
12.8%
-27.2% vs TC avg
§112
20.3%
-19.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1074 resolved cases

Office Action

§112
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 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 1-6 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 claim recites “(by mass)”, however, it is not clear that the limitation in the parenthesis is part of the claim The claim recites that “weight ratio of NaOH+0.713KOH to the clinker is 0-0.03:1”. However, it is not clear how the ratio could be zero when the cement contains NaOH, KOH, or combination thereof. The term “long” in claim 1is a relative term which renders the claim indefinite. The term “long” is not defined by the claim, the specification does not provide a standard for ascertaining the requisite degree, and one of ordinary skill in the art would not be reasonably apprised of the scope of the invention. The term “stable” in claim 1 is a relative term which renders the claim indefinite. The term “stable” is not defined by the claim, the specification does not provide a standard for ascertaining the requisite degree, and one of ordinary skill in the art would not be reasonably apprised of the scope of the invention. The claim recites “predominated by a glass phase”, however, it is not clear that the glass phase content is the highest or else in the clinker. Prior art considered CN110451827 discloses preparation method of alkali excitation cement, which is mainly composed of glass phase by firing, chemical composition is mainly SiO2, Al2O3, CaO, Na2O and K2O of clinker to prepare alkali excitant consumption low alkali excitation cement. CN110451827 discloses mixing industrial alkali, limestone and potassium sodium aluminosilicate raw material, grinding to fineness of 100 meshes sieve, then fully calcining in the oxidizing atmosphere at 1250 to 1350 ° C, quenching to obtain dry clinker, grinding the clinker to 200 meshes sieve residue less than or equal to 10 % of fineness after mixing sodium water glass to obtain cement. The potassium-aluminum silicate raw material contains SiO2, Al2O3; Na2O and/or K2O; the mass ratio of SiO2 + Al2O3 + Na2O + K2O + CaO + MgO is not less than 95.0 % in the residue after oxidizing and calcining at 1100 degrees centigrade; and in the total mass of SiO2 + Al2O3 + Na2O + K2O + CaO + MgO, the content of each component is CaO: 0 to 5.0 %, MgO: 0 to 2.0 %, SiO2: 50.0 to 75.0 %, Al2O3: 15.0 to 35.0 %; Na2O + K2O: 5.0 to 11.0 %. See Summery of the invention. However, CN110451827 does not disclose nor render obvious all the cumulative limitations of claim 1 for example the content of the constitutes. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SHUANGYI ABU ALI whose telephone number is (571)272-6453. The examiner can normally be reached Monday - Friday, 8:00 am- 5:00 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, Amber Orlando can be reached at (571)270-3149. 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. /SHUANGYI ABU ALI/Primary Examiner, Art Unit 1731
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Prosecution Timeline

Jul 11, 2024
Application Filed
Sep 21, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12735556
FABRICATION OF BENZOXAZINE FUNCTIONALIZED PARTICLES
4y 2m to grant Granted Sep 15, 2026
Patent 12709549
CERIUM BASED PARTICLES, PROCESS FOR PRODUCING THE SAME AND USES THEREOF IN POLISHING
4y 2m to grant Granted Aug 18, 2026
Patent 12703663
BIO-CATALYTIC CALCIUM CARBONATE CEMENTATION
7y 7m to grant Granted Aug 11, 2026
Patent 12703664
NANOPOROUS CERAMIC FOR ATOMIZATION CORE AND PREPARATION METHOD THEREOF
3y 1m to grant Granted Aug 11, 2026
Patent 12698237
BUILDING MATERIALS AND COMPONENTS AND METHODS OF MAKING THE SAME
2y 6m to grant Granted Aug 04, 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
45%
Grant Probability
83%
With Interview (+37.8%)
4y 1m (~1y 11m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1074 resolved cases by this examiner. Grant probability derived from career allowance rate.

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