Last updated: May 04, 2026

Application No. 18/491,393

PREPARING METHOD FOR LOW-DIAMETER CARBON NANOTUBE AND CARBON NANOTUBE PREPARED BY THE METHOD

Non-Final OA

Filed

Oct 20, 2023

Priority

Oct 21, 2022 — RE 10-2022-0136551

Examiner

MCCRACKEN, DANIEL

Art Unit

1736

Tech Center

1700 — Chemical & Materials Engineering

Assignee

Korea Kumho Petrochemical Co. Ltd.

OA Round

1 (Non-Final)

Interview Optional

— +16.2% interview lift. Examiner has a relatively high allowance rate (72%); +16.2% interview lift. A written response may suffice.

Based on 1179 resolved cases, 2023–2026

Examiner Intelligence

MCCRACKEN, DANIEL View full profile →

Grants 72% — above average

Career Allowance Rate

849 granted / 1179 resolved

+7.0% vs TC avg

Strong +16% interview lift

Without

With

+16.2%

Interview Lift

resolved cases with interview

Typical timeline

2y 11m

Avg Prosecution

31 currently pending

Career history

1210

Total Applications

across all art units

Statute-Specific Performance

§101

1.1%

-38.9% vs TC avg

§103

38.0%

-2.0% vs TC avg

§102

19.8%

-20.2% vs TC avg

§112

32.8%

-7.2% vs TC avg

Black line = Tech Center average estimate • Based on career data from 1179 resolved cases

Prosecution Timeline

Oct 20, 2023

Application Filed

Mar 21, 2026

Non-Final Rejection (current)

Precedent Cases

Applications granted by this same examiner with similar technology

18/007,484

Patent 12606438

Melt pyrolysis of hydrocarbon feedstock containing nitrogen and/or hydrogen sulphide

3y 2m to grant Granted Apr 21, 2026

17/299,564

Patent 12600629

PARTICULATE CARBON MATERIALS AND METHOD FOR THE SEPARATION THEREOF

4y 1m to grant Granted Apr 14, 2026

18/138,020

Patent 12600632

LAYER-NUMBER-CONTROLLABLE GRAPHENE DERIVED FROM NATURAL BIOMASS AND PREPARATION METHOD THEREOF

2y 11m to grant Granted Apr 14, 2026

17/847,440

Patent 12590004

CONDUCTIVE DIAMOND/AMORPHOUS CARBON COMPOSITE MATERIAL HAVING HIGH STRENGTH AND PROCESS FOR PREPARING THE SAME

3y 9m to grant Granted Mar 31, 2026

17/872,502

Patent 12590000

POROUS CARBON COMPOSITE MATERIAL AND MANUFACTURING METHOD THEREOF

3y 8m to grant Granted Mar 31, 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.

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Prosecution Projections

1-2

Expected OA Rounds

72%

Grant Probability

88%

With Interview (+16.2%)

2y 11m (~4m remaining)

Median Time to Grant

Low

PTA Risk

Based on 1179 resolved cases by this examiner. Grant probability derived from career allowance rate.