Prosecution Insights
Last updated: May 29, 2026

Examiner: PETTITT, JOHN F

Tech Center 3700 • Art Units: 3744 3763

This examiner grants 26% of resolved cases

Performance Statistics

25.6%
Allow Rate
-44.4% vs TC avg
765
Total Applications
+21.4%
Interview Lift
1749
Avg Prosecution Days
Based on 687 resolved cases, 2023–2026

Rejection Statute Breakdown

0.1%
§101 Eligibility
9.1%
§102 Novelty
83.5%
§103 Obviousness
5.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17153648 Cryogenic Containment System Non-Final OA Caterpillar Inc.
17224539 Thermoelectric Cooler, Optical Sub-Assembly, and Optical Module Non-Final OA Huawei Technologies Co., Ltd.
18523917 PULSE TUBE CRYOCOOLER AND METHOD FOR COOLING DOWN PULSE TUBE CRYOCOOLER Final Rejection SUMITOMO HEAVY INDUSTRIES, LTD.
19182432 ETHANE RECOVERY SYSTEM SUITABLE FOR RICH GAS WITH HIGH CARBON DIOXIDE CONTENT AND RECOVERY METHOD THEREFOR Final Rejection Jiangsu Urban and Rural Construction Vocational College
17947426 SOLID-STATE REFRIGERATION APPARATUS Non-Final OA DAIKIN INDUSTRIES, LTD.
17905574 Cryogenic Air Separation Method and Air Separation Unit Non-Final OA Linde GmbH
17757872 PROCESS AND PLANT FOR PROVISION OF OXYGEN PRODUCT Non-Final OA Linde GmbH
18324629 CRYOGENIC LIQUID WITHDRAWAL DEVICE AND SEALING RING Non-Final OA TOMCO2 SYSTEMS COMPANY
18755225 COOLING APPARATUS, ENERGY STORAGE SYSTEM INCLUDING SAME, AND METHOD OF COOLING ENERGY STORAGE SYSTEM Non-Final OA Samsung SDI Co., Ltd.
18411328 PROCESS AND APPARATUS FOR SEPARATING A MIXTURE OF HYDROGEN AND CARBON DIOXIDE Non-Final OA L'Air Liquide, Societe Anonyme pour l'Etude et l’Exploitation des Procedes Georges Claude
18218150 METHOD FOR REGULATING A DEVICE FOR SEPARATING AIR BY CRYOGENIC DISTILLATION Non-Final OA L'Air Liquide, Societe Anonyme pour l'Etude et l’Exploitation des Procedes Georges Claude
18571450 METHOD FOR OPERATING A REFRIGERATED VEHICLE, AND REFRIGERATED VEHICLE Final Rejection Messer SE & Co. KGaA
15012883 SELF-ADJUSTING CRYOGENIC FOOD FREEZER Non-Final OA Messer Industries USA, Inc.
18402961 METHOD FOR PRODUCTION AND SUPPLY OF A DENSIFIED LIQUID OXYGEN PRODUCT FOR SPACE VEHICLE APPLICATIONS Non-Final OA PRAXAIR TECHNOLOGY, INC.
18402058 SYSTEM AND METHOD FOR COMBINED LIQUEFACTION AND DENSIFICATION OF OXYGEN Non-Final OA PRAXAIR TECHNOLOGY, INC.
18164660 CRYOGENIC LIQUID TANK FOR AN AIRCRAFT AND METHOD FOR MANUFACTURING THE SAME Non-Final OA Airbus SAS
18543024 METHODS AND SYSTEMS FOR UNDERGROUND GAS STORAGE Non-Final OA Air Products and Chemicals, Inc.
18023309 COMPRESSED NATURAL GAS (CNG) POWER SYSTEM WITH C02 EMISSIONS CAPTURE AND STORAGE Non-Final OA ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
18716633 Method for liquefying a methane-rich gas to be processed, and corresponding facility Non-Final OA ENGIE
18731281 SYSTEM AND METHOD FOR TREATING ASSOCIATED GAS Non-Final OA GTUIT, LLC
18648082 DRY ICE PREPARATION DEVICE, AND AIR EXHAUST STRUCTURE AND AIR EXHAUST METHOD FOR DRY ICE PREPARATION DEVICE Non-Final OA HORECO2 DRY ICE BLASTING EQUIPMENT &SERVICE CO., LTD.
18398897 SYSTEM AND PROCESS FOR NATURAL GAS LIQUEFACTION Final Rejection NuBlu Innovations, LLC
18571120 SYSTEM FOR RECOVERING COMPRESSION ENERGY OF A GAS, LIQUEFIER COMPRISING SUCH A SYSTEM AND METHOD FOR RECOVERING COMPRESSION ENERGY OF A GAS Non-Final OA ARIANEGROUP SAS
18530483 METHOD FOR PRESSURIZING A LIQUID EXITING A PHASE SEPARATOR Final Rejection Air Liquide Large Industries U.S. LP
18210413 PROCESS FOR CRYOGENIC SEPARATION OF A FEED STREAM CONTAINING METHANE AND AIR GASES, FACILITY FOR PRODUCING BIOMETHANE BY PURIFICATION OF BIOGASES DERIVED FROM NON-HAZARDOUS WASTE STORAGE FACILITIES (NHWSF) IMPLEMENTING THE PROCESS Non-Final OA WAGA ENERGY
18257093 LNG PROCESS USING FEEDSTOCK AS PRIMARY REFRIGERANT Final Rejection JL ENERGY TRANSPORTATION INC.
18317326 System and Method for Cooling Fluids Containing Hydrogen or Helium Non-Final OA Chart Energy & Chemicals, Inc.
16385269 Mixed Refrigerant Liquefaction System and Method with Pre-Cooling Final Rejection Chart Energy & Chemicals, Inc.
18160089 APPARATUS AND METHOD FOR TRANSPORTING TEMPERATURE SENSITIVE MATERIALS Non-Final OA Stone Cold Systems, Inc.
17318121 CRYOGENIC STORAGE CONTAINER, CLOSING ELEMENT, AND METHOD OF MANUFACTURE Non-Final OA BioLife Solutions, Inc.

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