Last updated: May 29, 2026

Application No. 18/666,511

CARBON SORBENT FORMULATIONS FOR CARBON DIOXIDE ADSORPTION, AND RELATED METHODS

Final Rejection

Filed

May 16, 2024

Examiner

HENDRICKSON, STUART L

Art Unit

1736

Tech Center

1700 — Chemical & Materials Engineering

Assignee

Tda Research Inc.

OA Round

4 (Final)

Interview Optional

— +8.0% interview lift. Interview already conducted in this application's prosecution history. This examiner has a 72% grant rate with +8.0% interview lift. Since an interview has already been tried, recommend written response with narrowed claims based on precedent claim evolution patterns.

Based on 979 resolved cases, 2023–2026

Examiner Intelligence

HENDRICKSON, STUART L View full profile →

Grants 72% — above average

Career Allowance Rate

708 granted / 979 resolved

+7.3% vs TC avg

Moderate +8% lift

Without

With

+8.0%

Interview Lift

resolved cases with interview

Typical timeline

3y 1m

Avg Prosecution

30 currently pending

Career history

1017

Total Applications

across all art units

Statute-Specific Performance

§101

0.2%

-39.8% vs TC avg

§103

79.8%

+39.8% vs TC avg

§102

0.7%

-39.3% vs TC avg

§112

8.2%

-31.8% vs TC avg

Black line = Tech Center average estimate • Based on career data from 979 resolved cases

Prosecution Timeline

Show 10 earlier events

May 27, 2025

Request for Continued Examination

May 30, 2025

Response after Non-Final Action

Jun 17, 2025

Non-Final Rejection mailed

Nov 07, 2025

Interview Requested

Nov 14, 2025

Examiner Interview Summary

Nov 14, 2025

Applicant Interview (Telephonic)

Nov 17, 2025

Response Filed

Feb 23, 2026

Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

18/667,806

Patent 12636632

CARBON-CARBON COMPOSITE SORBENT FORMULATIONS FOR CARBON DIOXIDE ADSORPTION, AND RELATED METHODS

2y 0m to grant Granted May 26, 2026

17/830,816

Patent 12614735

COMPOSITION OF AND METHOD FOR OPTIMIZING A CATALYTIC REACTION

3y 11m to grant Granted Apr 28, 2026

18/543,750

Patent 12611649

BIOGENIC ACTIVATED CARBON AND METHODS OF MAKING AND USING SAME

2y 4m to grant Granted Apr 28, 2026

17/630,431

Patent 12605692

LIQUID ABSORBING BODY

4y 2m to grant Granted Apr 21, 2026

18/044,003

Patent 12606442

METHODS AND SYSTEMS FOR PRODUCING SOLID INORGANIC CARBONATE AND BICARBONATE COMPOUNDS

3y 1m to grant Granted Apr 21, 2026

Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.

Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

5-6

Expected OA Rounds

72%

Grant Probability

80%

With Interview (+8.0%)

3y 1m (~1y 0m remaining)

Median Time to Grant

High

PTA Risk

Based on 979 resolved cases by this examiner. Grant probability derived from career allowance rate.