Prosecution Insights
Last updated: May 29, 2026

Praxair Technology Inc.

10 pending office actions • 5 art units • 9 examiners • 0 of 10 (0%) have an AI response strategy ready • 15 patents granted in the last 365 days

Portfolio Summary

10
Total Pending OAs
7
Non-Final OAs
3
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 10 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

7
Overdue
1
Due this week
1
Due this month
1
Due in next 60 days
0
Due later

Deadline Fire Line

Every pending office action with a known statutory deadline, placed on a days-until-due axis. Dots left of Today are overdue; the further right, the more runway. Cases that share a deadline window stack vertically. 10 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (7)Due ≤ 7 days (1)Due ≤ 30 days (1)Due ≤ 60 days (1)

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.

0
Hard (0%)
9
Medium (90%)
1
Easy (10%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only9 (90%)
§112 only1 (10%)

Industry Mix

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

4
Life Sciences
40% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
6
Mechanical / Eng
60% 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.

100 h
Manual time on pending OAs
20 h
Time saved (low, 20%)
35 h
Time saved (mid, 35%)
0.9 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
PETTITT, JOHN F 2 25.6% +21.4%
MA, KUN KAI 1 79.2% +12.8%
KING, BRIAN M 1 70.3% +23.6%
MOORE, DEVON TYLEN 1 47.8% +30.9%
BERNS, DANIEL J 1 73.0% +34.1%
PHAN, ANNETTE HOANG-ANH 1 70.6% +33.3%
SCOTLAND, REBECCA LYNN 1 0.0% +0.0%
DALE, ABIGAYLE ANN 1 30.8% +81.8%
MERKLING, MATTHEW J 1 67.9% +13.0%

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
18402961 METHOD FOR PRODUCTION AND SUPPLY OF A DENSIFIED LIQUID OXYGEN PRODUCT FOR SPACE VEHICLE APPLICATIONS PETTITT, JOHN F 16d overdue
18402058 SYSTEM AND METHOD FOR COMBINED LIQUEFACTION AND DENSIFICATION OF OXYGEN PETTITT, JOHN F 16d overdue
17872477 METHODS AND EQUIPMENT FOR USING CARBON DIOXIDE IN POULTRY EGG INCUBATION TO IMPROVE CHARACTERISTICS OF POULTRY SCOTLAND, REBECCA LYNN 5d

Interview Candidates (9)

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 8 ordered by deadline are shown.

App #TitleExaminerDue in
17741578 SYSTEM AND METHOD FOR IMPROVED FLOW DETECTION DURING HIGH FREQUENCY VENTILATION DALE, ABIGAYLE ANN 260d overdue
18451194 System and Method for Precooling a Hydrogen Feed Stream with Concurrent Nitrogen Liquefaction MOORE, DEVON TYLEN 142d overdue
18064995 PROCESS FOR GENERATING A PURIFIED HYDROGEN PRODUCT FROM HEAVY HYDROCARBON FEEDSTOCKS PHAN, ANNETTE HOANG-ANH 49d overdue
18730614 SUPPLEMENTAL REFRIGERATION USING NITROGEN MA, KUN KAI 22d overdue
18402961 METHOD FOR PRODUCTION AND SUPPLY OF A DENSIFIED LIQUID OXYGEN PRODUCT FOR SPACE VEHICLE APPLICATIONS PETTITT, JOHN F 16d overdue
18402058 SYSTEM AND METHOD FOR COMBINED LIQUEFACTION AND DENSIFICATION OF OXYGEN PETTITT, JOHN F 16d overdue
18304921 METHOD AND SYSTEM FOR PRE-PURIFICATION OF A FEED AIR STREAM BERNS, DANIEL J 10d overdue
17667861 ACETYLENE FLUID SUPPLY PACKAGE, SYSTEM COMPRISING THE SAME AND METHOD OF FABRICATING SEMICONDUCTOR DEVICE USING THE SAME MERKLING, MATTHEW J 15d

Top Art Units

Art UnitApps
3763 5
1736 2
1615 1
3785 1
1725 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18730614 SUPPLEMENTAL REFRIGERATION USING NITROGEN MA, KUN KAI 3763 §112 Non-Final OA 22d overdue Pending Jul 19, 2024
18402961 METHOD FOR PRODUCTION AND SUPPLY OF A DENSIFIED LIQUID OXYGEN PRODUCT FOR SPACE VEHICLE APPLICATIONS PETTITT, JOHN F 3763 §103 Non-Final OA 16d overdue Pending Jan 03, 2024
18402058 SYSTEM AND METHOD FOR COMBINED LIQUEFACTION AND DENSIFICATION OF OXYGEN PETTITT, JOHN F 3763 §103 Non-Final OA 16d overdue Pending Jan 02, 2024
18451208 System and Method for Turndown of a Hydrogen Precooling and/or Hydrogen Liquefaction System KING, BRIAN M 3763 §103 Non-Final OA 33d Pending Aug 17, 2023
18451194 System and Method for Precooling a Hydrogen Feed Stream with Concurrent Nitrogen Liquefaction MOORE, DEVON TYLEN 3763 §103 Final Rejection 142d overdue Pending Aug 17, 2023
18304921 METHOD AND SYSTEM FOR PRE-PURIFICATION OF A FEED AIR STREAM BERNS, DANIEL J 1736 §103 Non-Final OA 10d overdue Pending Apr 21, 2023
18064995 PROCESS FOR GENERATING A PURIFIED HYDROGEN PRODUCT FROM HEAVY HYDROCARBON FEEDSTOCKS PHAN, ANNETTE HOANG-ANH 1736 §103 Non-Final OA 49d overdue Pending Dec 13, 2022
17872477 METHODS AND EQUIPMENT FOR USING CARBON DIOXIDE IN POULTRY EGG INCUBATION TO IMPROVE CHARACTERISTICS OF POULTRY SCOTLAND, REBECCA LYNN 1615 §103 Final Rejection 5d Pending Jul 25, 2022
17741578 SYSTEM AND METHOD FOR IMPROVED FLOW DETECTION DURING HIGH FREQUENCY VENTILATION DALE, ABIGAYLE ANN 3785 §103 Final Rejection 260d overdue Pending May 11, 2022
17667861 ACETYLENE FLUID SUPPLY PACKAGE, SYSTEM COMPRISING THE SAME AND METHOD OF FABRICATING SEMICONDUCTOR DEVICE USING THE SAME MERKLING, MATTHEW J 1725 §103 Non-Final OA 15d Pending Feb 09, 2022

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