Prosecution Insights
Last updated: April 19, 2026

Examiner: HUANG, RYAN

Tech Center 1700 • Art Units: 1777

This examiner grants 52% of resolved cases

Performance Statistics

52.0%
Allow Rate
-13.0% vs TC avg
606
Total Applications
+31.9%
Interview Lift
1247
Avg Prosecution Days
Based on 544 resolved cases, 2023–2026

Rejection Statute Breakdown

2.1%
§101 Eligibility
17.6%
§102 Novelty
47.3%
§103 Obviousness
24.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18254301 POROUS AND MONOLITHIC CARBON MEMBRANES AND THEIR USE Non-Final OA The University of Chicago
18018987 COATED ULTRAFILTRATION DEVICES Non-Final OA CORNING INCORPORATED
18657920 PROCESS FOR PREPARATION OF STABLE PROTEIN SOLUTION Non-Final OA Kashiv BioSciences, LLC
18012214 DUAL-LAYER MEMBRANE Final Rejection COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
18103337 MEMBRANES AND METHOD FOR REMOVING TRACE METALS Final Rejection ENTEGRIS, INC.
18176842 COMPOSITE SEMIPERMEABLE MEMBRANE AND SPIRAL MEMBRANE ELEMENT Final Rejection NITTO DENKO CORPORATION
17995999 FLOW-THROUGH PROCESSES AND DEVICES FOR PURIFYING A TARGET MOLECULE Final Rejection Solventum Intellectual Properties Company
18026661 LAMINATE Final Rejection DAIKIN INDUSTRIES, LTD.
17064926 ROTARY SCREENING DEVICE WITH BEARINGS Non-Final OA Duperon Innovation LLC
17099269 SELF CONTAINED, AUTOMATIC WATER QUALITY MONITORING AND TREATMENT SYSTEM Non-Final OA FLUID HANDLING LLC.
18148168 UNIT AND METHOD FOR DECOMPOSING OZONE, AND SUBSTRATE TREATING APPARATUS INCLUDING THE UNIT Final Rejection SEMES CO., LTD.
18024844 WATER TREATMENT SYSTEM, INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM Final Rejection ORGANO CORPORATION
17719850 SYSTEMS AND METHODS FOR TANGENTIAL FLOW DEPTH FILTRATION Final Rejection Repligen Corporation
18168913 WATER FILTRATION ASSEMBLY WITH ENHANCED CONTAMINANT REDUCTION PERFORMANCE Non-Final OA Haier US Appliance Solutions, Inc.
18159302 METHOD AND SYSTEM FOR IMPROVING SOLID-LIQUID SEPARATION PERFORMANCE OF SLUDGE BY IN-SITU CRYSTALLIZATION OF WATER Final Rejection Tongji University
18028866 POLYAMIDE POROUS MEMBRANE AND METHOD FOR PRODUCING SAME Non-Final OA NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY
18022013 ARTICLE INCLUDING FILTRATION MEDIA AND FLUOROPOLYMER AND METHODS OF MAKING AND USING SAME Final Rejection Donaldson Company, Inc.
17731952 HYDROLYTICALLY STABLE ZWITTERIONIC CHROMATOGRAPHIC MATERIALS Final Rejection Waters Technologies Corporation
18023656 POLYAMIDE REVERSE OSMOSIS MEMBRANE HAVING EXCELLENT DURABILITY AND ANTIFOULING PROPERTIES, AND METHOD FOR MANUFACTURING SAME Final Rejection Toray Advanced Materials Korea Inc.
16474412 Monitoring Performance in Continuous Chromatography Non-Final OA CYTIVA SWEDEN AB
17795262 AN OUTLET COVER FOR A RECESSED PLATE-TYPE FILTER, A FILTER PLATE, A FILTER PLATE ASSEMBLY AND A RECESSED PLATE-TYPE FILTER Non-Final OA Metso Outotec Finland Oy
18296830 CERAMIC FILTRATION ELEMENT Non-Final OA MANN+HUMMEL LIFE SCIENCES & ENVIRONMENT HOLDING SINGAPORE PTE. LTD.
18035142 POROUS HOLLOW-FIBER MEMBRANE AND METHOD FOR TESTING INTEGRITY Non-Final OA ASAHI KASEI LIFE SCIENCE CORPORATION
18245625 METHOD AND APPARATUS FOR PROLONGING CONTINUOUS OPERATION PERIOD OF METHANOL-TO-OLEFINS WATER WASHING PROCESS Final Rejection SINOPEC GUANGZHOU ENGINEERING CO., LTD.
18120419 SYSTEM AND METHOD FOR DYNAMIC DOSING OF UV-C RADIATION Non-Final OA Tru-D SmartUVC
18021074 ASYMMETRIC HYDROPHOBIC POLYOLEFIN HOLLOW FIBER MEMBRANE, PREPARING METHOD, AND USE OF THE SAME Final Rejection HANGZHOU COBETTER TECHNOLOGY CO., LTD.
18018078 METHODS OF PREPARING SOLID PARTICULATE MATERIALS Non-Final OA MICROPORE TECHNOLOGIES LIMITED
14649227 Method for Cleaning of Packed Bed Chromatography Columns Final Rejection Cytiva BioProcess R&D AB
17377844 METHODS OF PREPARING DUAL-LAYER POLYVINYLIDENE FLUORIDE HOLLOW FIBER MEMBRANES AND USES THEREOF Final Rejection New Mexico Tech University Research Park Corporation

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