Prosecution Insights
Last updated: October 04, 2026
Application No. 18/785,857

USE OF CLOSED-PORE MICROSPHERES OF EXPANDED PEARLITE AS A FILLER FOR THE PRODUCTION OF MOULDINGS FOR THE FOUNDRY INDUSTRY

Non-Final OA §102§112
Filed
Jul 26, 2024
Priority
Apr 08, 2016 — DE 10 2016 205 960.2 +3 more
Examiner
ABU ALI, SHUANGYI
Art Unit
Tech Center
Assignee
Hüttenes-Albertus Chemische Werke Gesellschaft Mit Beschränkter Haftung
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
52 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

§102 §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. Claim 2-3 is 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. The term “virtually smooth” in claim 3 is a relative term which renders the claim indefinite. The term “virtually smooth ” 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. Claims 2 recites “any of claim 1”. It should be “claim 1”? Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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(s) 1-3 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by CN 105414468A. Regarding claims 1 -3, CN105414468A discloses 100-120 mesh (125- 149 micron) spherical closed- pore expanded perlite ibeing used in foundry industry with water glass bonding agent in molding. The amount of the sodium silicate used is greatly reduced; through spherical sealed expanded perlite and negative ion rock flour added in raw materials, the plasticity and permeability of the molding sand can be improved; nano calcium fluoride carried by bentonite is dispersed in the sand, the lubricating effect and the reinforcing effect are achieved, and a non-stick impermeable layer can be solidified and formed, so that the sand is prevented from adhering to the castings. (abstract; [0005-0008] and claims 1-4). Spherical is read on" virtually smooth". 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
Read full office action

Prosecution Timeline

Jul 26, 2024
Application Filed
Aug 20, 2026
Non-Final Rejection mailed — §102, §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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