Office Action Predictor
Last updated: April 15, 2026
Application No. 18/035,568

SCREW AND TWIN-SCREW ASSEMBLY FOR USE IN ELASTOMER MIXTURE EXTRUDERS AND ASSOCIATED METHOD FOR EXTRUSION OF ELASTOMER MIXTURES

Final Rejection §112
Filed
May 05, 2023
Examiner
BHATIA, ANSHU
Art Unit
1774
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Pomini Rubber & Plastics S.R.L.
OA Round
2 (Final)
85%
Grant Probability
Favorable
3-4
OA Rounds
2y 9m
To Grant
99%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allow Rate
783 granted / 926 resolved
+19.6% vs TC avg
Strong +17% interview lift
Without
With
+16.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
45 currently pending
Career history
971
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
44.7%
+4.7% vs TC avg
§102
28.2%
-11.8% vs TC avg
§112
21.0%
-19.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 926 resolved cases

Office Action

§112
DETAILED ACTION 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 3 is rejected for being indefinite since the claim recites a crest with to diameter relationship of D = (.025-.20)D which contradicts the relationship in claim 1 of D = (.3-.4)D. Response to Arguments The previous 35 U.S.C. 112 (b) rejection of claims 2, 3, and 13 are withdrawn in light of the amendments to the claims. The remarks regarding the 35 U.S.C. 102 (a)(1) rejections have been considered and are persuasive in light of the amendment to claim 1. However, the amendment to claim 1, necessitates a new 35 U.S.C. 112 (b) rejection of claim 3. The remarks regarding the 35 U.S.C. 103 rejections have been considered and are persuasive in light of the amendment to claim 1. Allowable Subject Matter Claims 1, 2, 4, 5, 6, 7, 8, 9, 10, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20 and 21 are allowed. The prior art does not teach or fairly suggest a screw with the combination of the relationship of the three sectors configuration and the crest to diameter relationship in each of the three sectors, and the constant crest with over one or two pitches as claimed in independent claim 1. Claim 3 is rejected under 35 U.S.C. 112 (b) but would be allowed if the indefinite rejection above is overcome. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANSHU BHATIA whose telephone number is (571)270-7628. The examiner can normally be reached Monday - Friday 11 a.m. to 7:30 p.m.. 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, Claire Wang can be reached at (571)270-1051. 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. /ANSHU BHATIA/Primary Examiner, Art Unit 1774
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Prosecution Timeline

May 05, 2023
Application Filed
Oct 30, 2025
Non-Final Rejection — §112
Feb 18, 2026
Response Filed
Mar 05, 2026
Final Rejection — §112
Apr 01, 2026
Response after Non-Final Action

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12582962
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2y 5m to grant Granted Mar 24, 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
85%
Grant Probability
99%
With Interview (+16.6%)
2y 9m
Median Time to Grant
Moderate
PTA Risk
Based on 926 resolved cases by this examiner. Grant probability derived from career allow rate.

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