Prosecution Insights
Last updated: October 25, 2026

Sinopec Dalian Research Institute Of Petroleum And Petrochemicals Co. Ltd.

Technology area: Chemistry & Materials

4 pending office actions • 3 art units • 4 examiners • 0 of 4 (0%) have an AI response strategy ready • 11 patents granted in the last 365 days

Analysis

Sinopec Dalian Research Institute Of Petroleum And Petrochemicals Co. Ltd. has 4 pending office actions in Chemistry & Materials. The docket involves 4 distinct examiners but 3 distinct art units, indicating that examiner assignments are more dispersed than technical-unit assignments.

NGUYEN, TAM M is the busiest examiner, with 1 pending matter. Counsel can use the shared art-unit structure to compare technical framing, while preserving separate response strategies for the individual examiner records.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Portfolio Summary

4
Total Pending OAs
3
Non-Final OAs
1
Final Rejections
0
Advisory / Quayle

Case Difficulty Mix

Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.

3
Hard (75%)
0
Medium (0%)
1
Easy (25%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§112 only1 (25%)
Multi-statute (no §101)3 (75%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

4
Life Sciences
100% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% of docket
0
Business / Other
0% of docket

Time-on-OA Estimate

Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.

40 h
Manual time on pending OAs
8 h
Time saved (low, 20%)
14 h
Time saved (mid, 35%)
0.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
NGUYEN, TAM M 1 77.1% +11.7%
MCCRACKEN, DANIEL 1 71.9% +16.4%
KUYKENDALL, ALYSSA LEE 1 18.5% +75.5%
PEREZ, JELITZA M 1 75.1% +28.9%

Hard Cases (3)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
18704623 GRADING SYSTEM OF HYDROGENATION CATALYST AND APPLICATION THEREOF AND GRADING METHOD OF HYDROGENATION CATALYST NGUYEN, TAM M —
18260362 PETROLEUM COKE TREATMENT APPARATUS, PROCESS, AND TREATMENT SYSTEM KUYKENDALL, ALYSSA LEE —
18250817 LIQUID-LIQUID MIXER, LIQUID-LIQUID REACTION APPARATUS INCLUDING THE SAME AND LIQUID-LIQUID REACTION PROCESS USING THE SAME PEREZ, JELITZA M —

Interview Candidates (4)

Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 4 ordered by deadline are shown.

App #TitleExaminerDue in
18704623 GRADING SYSTEM OF HYDROGENATION CATALYST AND APPLICATION THEREOF AND GRADING METHOD OF HYDROGENATION CATALYST NGUYEN, TAM M —
18699777 WORKING SOLUTION FOR PRODUCING HYDROGEN PEROXIDE THROUGH ANTHRAQUINONE PROCESS AND SOLVENT SYSTEM THEREOF MCCRACKEN, DANIEL —
18260362 PETROLEUM COKE TREATMENT APPARATUS, PROCESS, AND TREATMENT SYSTEM KUYKENDALL, ALYSSA LEE —
18250817 LIQUID-LIQUID MIXER, LIQUID-LIQUID REACTION APPARATUS INCLUDING THE SAME AND LIQUID-LIQUID REACTION PROCESS USING THE SAME PEREZ, JELITZA M —

Top Art Units

Art UnitApps
1774 2
1771 1
1736 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18704623 GRADING SYSTEM OF HYDROGENATION CATALYST AND APPLICATION THEREOF AND GRADING METHOD OF HYDROGENATION CATALYST NGUYEN, TAM M 1771 §103§112 Non-Final OA — Pending Apr 25, 2024
18699777 WORKING SOLUTION FOR PRODUCING HYDROGEN PEROXIDE THROUGH ANTHRAQUINONE PROCESS AND SOLVENT SYSTEM THEREOF MCCRACKEN, DANIEL 1736 §112 Non-Final OA — Pending Apr 09, 2024
18260362 PETROLEUM COKE TREATMENT APPARATUS, PROCESS, AND TREATMENT SYSTEM KUYKENDALL, ALYSSA LEE 1774 §103§112 Final Rejection — Pending Jul 05, 2023
18250817 LIQUID-LIQUID MIXER, LIQUID-LIQUID REACTION APPARATUS INCLUDING THE SAME AND LIQUID-LIQUID REACTION PROCESS USING THE SAME PEREZ, JELITZA M 1774 §103§112 Non-Final OA — Pending Apr 27, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Sinopec Dalian Research Institute Of Petroleum And Petrochemicals Co. Ltd. have?

Sinopec Dalian Research Institute Of Petroleum And Petrochemicals Co. Ltd. has 4 pending office actions as of October 2026, spread across 3 art units and 4 examiners.

Which USPTO examiner handles the most Sinopec Dalian Research Institute Of Petroleum And Petrochemicals Co. Ltd. applications?

Tam M Nguyen has the most, with 1 of Sinopec Dalian Research Institute Of Petroleum And Petrochemicals Co. Ltd.'s pending office actions.

What technology area are Sinopec Dalian Research Institute Of Petroleum And Petrochemicals Co. Ltd.'s patent applications in?

Mostly Chemistry & Materials (USPTO Tech Center 1700), based on where its pending office actions are examined.

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