Last updated: July 17, 2026

Application No. 18/666,544

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

— +8.3% interview lift. Interview already conducted in this application's prosecution history. This examiner has a 72% grant rate with +8.3% interview lift. Since an interview has already been tried, recommend written response with narrowed claims based on precedent claim evolution patterns.

Based on 993 resolved cases, 2023–2026

Examiner Intelligence

HENDRICKSON, STUART L View full profile →

Grants 72% — above average

Career Allowance Rate

718 granted / 993 resolved

+7.3% vs TC avg

Moderate +8% lift

Without

With

+8.3%

Interview Lift

resolved cases with interview

Typical timeline

3y 1m

Avg Prosecution

30 currently pending

Career history

1020

Total Applications

across all art units

Statute-Specific Performance

§101

0.2%

-39.8% vs TC avg

§103

78.9%

+38.9% vs TC avg

§102

0.7%

-39.3% vs TC avg

§112

9.1%

-30.9% vs TC avg

Black line = Tech Center average estimate • Based on career data from 993 resolved cases

Prosecution Timeline

Show 4 earlier events

May 12, 2025

Examiner Interview Summary

May 15, 2025

Response Filed

Aug 22, 2025

Final Rejection mailed

Nov 17, 2025

Request for Continued Examination

Nov 20, 2025

Response after Non-Final Action

Dec 05, 2025

Non-Final Rejection mailed

Mar 05, 2026

Response Filed

Apr 16, 2026

Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

17/739,191

Patent 12679735

BIO-OIL LIGHT FRACTION-BASED BREAD-SHAPED POROUS ACTIVATED CARBON, METHOD FOR PREPARING THE SAME AND USE THEREOF

4y 2m to grant Granted Jul 14, 2026

18/318,418

Patent 12679732

Two-dimensional polymeric fullerene and preparation method thereof

3y 2m to grant Granted Jul 14, 2026

17/544,361

Patent 12673878

METHOD FOR PRODUCING CALCIUM CARBONATE, CALCIUM CARBONATE, AND METHOD FOR GROWING CALCIUM CARBONATE CRYSTALS

4y 7m to grant Granted Jul 07, 2026

17/733,860

Patent 12668516

SYSTEM AND METHOD FOR USING ULTRAMICROPOROUS CARBON FOR THE SELECTIVE REMOVAL OF NITRATE WITH CAPACITIVE DEIONIZATION

4y 2m to grant Granted Jun 30, 2026

18/581,888

Patent 12668702

HIGH TEMPERATURE HEAT INTEGRATION METHOD OF MAKING CARBON BLACK

2y 4m to grant Granted Jun 30, 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

81%

With Interview (+8.3%)

3y 1m (~11m remaining)

Median Time to Grant

High

PTA Risk

Based on 993 resolved cases by this examiner. Grant probability derived from career allowance rate.