Prosecution Insights
Last updated: October 27, 2026

Air Liquide Large Industries U.S. LP

Technology areas: Chemistry & Materials • Medical Devices & Mechanical Engineering

3 pending office actions • 3 art units • 3 examiners • 0 of 3 (0%) have an AI response strategy ready

Analysis

Air Liquide Large Industries U.S. LP has 3 pending office actions in Chemistry & Materials. The matters are distributed among 3 examiners and 3 art units, indicating separate examination channels rather than a single concentrated assignment.

PETTITT, JOHN F is the busiest examiner, with 1 pending matter. Counsel should therefore track each action independently and avoid relying on one examiner interaction as a portfolio-wide guide.

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

Portfolio Summary

3
Total Pending OAs
2
Non-Final OAs
1
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 1 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

1
Overdue
0
Due this week
0
Due this month
0
Due in next 60 days
0
Due later

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.

2
Hard (67%)
1
Medium (33%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (33%)
Multi-statute (no §101)2 (67%)

Industry Mix

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

2
Life Sciences
67% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
1
Mechanical / Eng
33% 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.

30 h
Manual time on pending OAs
6 h
Time saved (low, 20%)
10 h
Time saved (mid, 35%)
0.3 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
PETTITT, JOHN F 1 25.9% +21.6%
NGUYEN, HUY TRAM 1 79.3% +6.6%
DAVIS, SHENG HAN 1 66.3% +33.1%

Hard Cases (2)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 2 ordered by deadline are shown.

App #TitleExaminerDue in
18530483 METHOD FOR PRESSURIZING A LIQUID EXITING A PHASE SEPARATOR PETTITT, JOHN F 1d overdue
18529914 APPARATUS AND METHOD FOR CONTROLLING CATALYST TEMPERATURE WITHIN A REACTOR TUBE NGUYEN, HUY TRAM —

Interview Candidates (2)

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 2 ordered by deadline are shown.

App #TitleExaminerDue in
18530483 METHOD FOR PRESSURIZING A LIQUID EXITING A PHASE SEPARATOR PETTITT, JOHN F 1d overdue
18529821 APPARATUS AND METHOD FOR CONTROLLING CATALYST TEMPERATURE WITHIN A REACTOR TUBE DAVIS, SHENG HAN —

Top Art Units

Art UnitApps
3763 1
1774 1
1732 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18530483 METHOD FOR PRESSURIZING A LIQUID EXITING A PHASE SEPARATOR PETTITT, JOHN F 3763 §102§103§112 Final Rejection 1d overdue Pending Dec 06, 2023
18529914 APPARATUS AND METHOD FOR CONTROLLING CATALYST TEMPERATURE WITHIN A REACTOR TUBE NGUYEN, HUY TRAM 1774 §102§103 Non-Final OA — Pending Dec 05, 2023
18529821 APPARATUS AND METHOD FOR CONTROLLING CATALYST TEMPERATURE WITHIN A REACTOR TUBE DAVIS, SHENG HAN 1732 §103 Non-Final OA — Pending Dec 05, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Air Liquide Large Industries U.S. LP have?

Air Liquide Large Industries U.S. LP has 3 pending office actions as of October 2026, spread across 3 art units and 3 examiners.

Which USPTO examiner handles the most Air Liquide Large Industries U.S. LP applications?

John F Pettitt has the most, with 1 of Air Liquide Large Industries U.S. LP's pending office actions.

What technology area are Air Liquide Large Industries U.S. LP's patent applications in?

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

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