Prosecution Insights
Last updated: April 19, 2026
Application No. 17/829,687

METHODS AND SYSTEMS FOR FORMING VATERITE FROM CALCINED LIMESTONE USING ELECTRIC KILN

Non-Final OA §112
Filed
Jun 01, 2022
Examiner
HENDRICKSON, STUART L
Art Unit
1736
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Arelac, Inc.
OA Round
5 (Non-Final)
72%
Grant Probability
Favorable
5-6
OA Rounds
3y 2m
To Grant
80%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allow Rate
699 granted / 969 resolved
+7.1% vs TC avg
Moderate +8% lift
Without
With
+8.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
42 currently pending
Career history
1011
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
65.9%
+25.9% vs TC avg
§102
1.4%
-38.6% vs TC avg
§112
8.0%
-32.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 969 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 . The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. The RCE is accepted. Claims 40, 41 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. In claim 40, ‘a’ group is improper and should be ‘the’ group. Further, the additional materials are vague. For example, ‘finely divided’ is subjective, ‘coloring admixture’ is awkward, ‘damp-proofing admixture’ appears to be the same thing as ‘water repellant’, ‘polozan’ is a mineral aggregate. Claim 41 lacks antecedent and should depend from claim 40. Applicant’s arguments with respect to claim(s) above have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. /STUART L HENDRICKSON/Primary Examiner, Art Unit 1736
Read full office action

Prosecution Timeline

Jun 01, 2022
Application Filed
Jun 25, 2024
Non-Final Rejection — §112
Sep 27, 2024
Response Filed
Oct 16, 2024
Final Rejection — §112
Jan 21, 2025
Response after Non-Final Action
Feb 21, 2025
Request for Continued Examination
Feb 24, 2025
Response after Non-Final Action
Feb 25, 2025
Non-Final Rejection — §112
Jun 30, 2025
Response Filed
Jul 30, 2025
Final Rejection — §112
Oct 01, 2025
Response after Non-Final Action
Oct 31, 2025
Request for Continued Examination
Nov 04, 2025
Response after Non-Final Action
Nov 05, 2025
Non-Final Rejection — §112
Feb 06, 2026
Response Filed
Feb 06, 2026
Response after Non-Final Action

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600642
METHODS FOR EXTRACTING LITHIUM FROM BRINES
2y 5m to grant Granted Apr 14, 2026
Patent 12600864
IMPURITY REMOVAL AND MODIFICATION METHOD FOR PYROLYSIS CARBON BLACK OF WASTE TIRES
2y 5m to grant Granted Apr 14, 2026
Patent 12576385
CARBON MOLECULAR SIEVE ADSORBENT MONOLITHS AND METHODS FOR MAKING THE SAME
2y 5m to grant Granted Mar 17, 2026
Patent 12577109
BORON-SULFUR-CODOPED POROUS CARBON MATERIAL AND PREPARATION METHOD AND USE THEREOF
2y 5m to grant Granted Mar 17, 2026
Patent 12577119
METHOD FOR FORMING INSOLUBLE SOLUTE ADDUCTS USING AN ACIDIC MEDIUM
2y 5m to grant Granted Mar 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

5-6
Expected OA Rounds
72%
Grant Probability
80%
With Interview (+8.2%)
3y 2m
Median Time to Grant
High
PTA Risk
Based on 969 resolved cases by this examiner. Grant probability derived from career allow rate.

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