Prosecution Insights
Last updated: April 19, 2026

Examiner: HE, QIANPING

Tech Center 1700 • Art Units: 1776

This examiner grants 68% of resolved cases

Performance Statistics

68.1%
Allow Rate
+3.1% vs TC avg
310
Total Applications
+11.7%
Interview Lift
1164
Avg Prosecution Days
Based on 248 resolved cases, 2023–2026

Rejection Statute Breakdown

1.4%
§101 Eligibility
17.6%
§102 Novelty
43.2%
§103 Obviousness
34.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19354818 AN AIR COMPRESSOR FILTER Final Rejection ZHEJIANG NAN PU PNEUMATIC COMPONENT CO., LTD.
17872711 HALOGEN-SUBSTITUTED 9,9-BIS(4-AMINOPHENYL)FLUORENE BASED POLYIMIDE MEMBRANES FOR GAS SEPARATION APPLICATIONS Final Rejection Saudi Arabian Oil Company
18039577 WASHABLE FILTER BODIES AND METHODS FOR PRODUCING Non-Final OA CORNING INCORPORATED
17976324 CEMENT MIXTURES FOR PLUGGING MULTICELLULAR FILTER BODIES AND METHODS OF MAKING THE SAME Final Rejection CORNING INCORPORATED
18045837 FILTER ELEMENT AND FILTER ASSEMBLY, COMPRISING AN ENCODING ELEMENT Non-Final OA Carl Freudenberg KG
18175004 FILTER, GAS SENSOR, AND GAS SENSOR SYSTEM Final Rejection KABUSHIKI KAISHA TOSHIBA
18156097 SERVICE COVER FOR INSTALLING AND REMOVING FILTER ELEMENTS OF A FILTER ASSEMBLY Final Rejection Caterpillar Inc.
17966604 DEPTH FILTERS AND RELATED METHODS Non-Final OA ENTEGRIS, INC.
17922181 FILTER UNIT AND FILTERING METHOD Non-Final OA Siemens Energy Global GmbH & Co. KG
18033113 FILTER PLEAT PACK AND AIR FILTER UNIT Final Rejection NITTO DENKO CORPORATION
18307767 APPARATUS AND METHOD FOR REMOVING GAS FROM AN INFUSION LINE Final Rejection CareFusion 303, Inc.
18226705 FAN FILTER ASSEMBLY Non-Final OA Johnson Controls Tyco IP Holdings LLP
18508510 HEATER ELEMENT AND VEHICLE INTERIOR PURIFICATION SYSTEM Non-Final OA NGK INSULATORS, LTD.
18070550 GAS FILTER DEVICE AND RETICLE CARRIER PROVIDED WITH THE SAME Non-Final OA GUDENG PRECISION INDUSTRIAL CO., LTD.
17651372 FILTER ASSEMBLY FOR HIGH VOLUME EVACUATION Non-Final OA SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
18569865 Ammonia Cracking for Green Hydrogen Non-Final OA Air Products and Chemicals, Inc.
17956055 APPARATUS AND METHOD FOR AMMONIA WASTEWATER REDUCTION Non-Final OA Air Products and Chemicals, Inc.
18096875 CANDLE FILTER ELEMENT Non-Final OA LENZING AKTIENGESELLSCHAFT
18039121 END CAPS AND PLEAT GUIDES FOR FILTRATION Non-Final OA Donaldson Company, Inc.
18432975 SYSTEMS AND METHODS FOR DEHUMIDIFYING AND PURIFYING AIR THROUGH COAL-BASED ELECTROTHERMAL SWING ADSORPTION Non-Final OA CARBON HOLDINGS INTELLECTUAL PROPERTIES, LLC
18586508 Device for recirculation and dehumidification of fluorinated gas Non-Final OA Synecom S.r.l.
18532155 Air Filter Medium, Filter Medium Body, and Filter Element Non-Final OA MANN+HUMMEL GmbH
18570772 FILTER STRUCTURE Non-Final OA TOYO ALUMINIUM EKCO PRODUCTS CO., LTD.
18568891 METHOD FOR CLEANING A FILTER Non-Final OA Becker Additive Manufacturing Solutions GmbH
18202895 Air Scrubber Non-Final OA Mullet Tools, LLC
18514949 Cartridges for Vertically Oriented Dust Collectors Non-Final OA Imperial Systems, Inc.
18557143 COLD TRAP FOR EXTRACTING CHEMICAL SPECIES BY FREEZE DISTILLATION Non-Final OA Paragon Space Development Corporation
18493476 AIR PURIFICATION FILTER DEVICE USING X-RAY IONIZER Non-Final OA Cobalt Technology Inc.
18111132 ALL-DIRECTION FLOW-THROUGH FLOW DIRECTING MEMBER WITH ANGLED BAFFLES Non-Final OA Cummins Filtration Inc.
18023628 COMPRESSED GAS FILTER WITH THROUGH-OPENING IN THE HOUSING HEAD Non-Final OA BEKO Technologies GmbH

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