Last updated: August 30, 2026

Application No. 18/056,415

METHODS OF USING AND CONVERTING RECOVERED RADIUM

Final Rejection

Filed

Nov 17, 2022

Priority

Dec 15, 2021 — provisional 63/265,419

Examiner

PIRO, NICHOLAS ANTHONY

Art Unit

1738

Tech Center

1700 — Chemical & Materials Engineering

Assignee

Chevron Corporation

OA Round

2 (Final)

This examiner grants 46% of cases after interview

— +37.4% interview lift. A telephonic interview to clarify the technical implementation could significantly improve the outcome.

Based on 35 resolved cases, 2023–2026

Examiner Intelligence

PIRO, NICHOLAS ANTHONY View full profile →

Grants 46% of resolved cases

Career Allowance Rate

16 granted / 35 resolved

-19.3% vs TC avg

Strong +37% interview lift

Without

With

+37.4%

Interview Lift

resolved cases with interview

Typical timeline

3y 5m

Avg Prosecution

62 currently pending

Career history

103

Total Applications

across all art units

Statute-Specific Performance

§101

0.4%

-39.6% vs TC avg

§103

47.4%

+7.4% vs TC avg

§102

14.4%

-25.6% vs TC avg

§112

22.4%

-17.6% vs TC avg

Black line = Tech Center average estimate • Based on career data from 35 resolved cases

Prosecution Timeline

Nov 17, 2022

Application Filed

Dec 23, 2025

Non-Final Rejection mailed

Mar 27, 2026

Response after Non-Final Action

Mar 27, 2026

Response Filed

Jun 18, 2026

Response Filed

Aug 21, 2026

Final Rejection mailed (current)

Precedent Cases

Applications granted by this same examiner with similar technology

18/682,143

Patent 12703644

ALUMINUM-DOPED CATHODE MATERIAL PRECURSOR, AND PREPARATION METHOD THEREFOR AND USE THEREOF

2y 6m to grant Granted Aug 11, 2026

17/865,610

Patent 12672483

METHOD OF MAKING THERMOELECTRIC MATERIALS

3y 11m to grant Granted Jun 30, 2026

17/993,968

Patent 12633430

CONSTRUCTING METHOD FOR DELAYING CORROSION OF RADIOACTIVE WASTE DISPOSAL CONTAINER IN CONCRETE DISPOSAL VAULT

3y 5m to grant Granted May 19, 2026

18/303,477

Patent 12623916

BETA-TYPE ACTIVE ZINC SULFIDE AND PREPARATION METHOD THEREFOR

3y 0m to grant Granted May 12, 2026

18/028,654

Patent 12617683

METHOD FOR PRODUCING TRIFLUOROAMINE OXIDE

3y 1m to grant Granted May 05, 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

3-4

Expected OA Rounds

46%

Grant Probability

83%

With Interview (+37.4%)

3y 5m (~0m remaining)

Median Time to Grant

Moderate

PTA Risk

Based on 35 resolved cases by this examiner. Grant probability derived from career allowance rate.