Prosecution Insights
Last updated: April 19, 2026

Examiner: JEONG, YOUNGSUL

Tech Center 1700 • Art Units: 1772

This examiner grants 72% of resolved cases

Performance Statistics

72.0%
Allow Rate
+7.0% vs TC avg
749
Total Applications
+21.8%
Interview Lift
1027
Avg Prosecution Days
Based on 704 resolved cases, 2023–2026

Rejection Statute Breakdown

0.1%
§101 Eligibility
8.9%
§102 Novelty
57.2%
§103 Obviousness
28.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17927412 SOLID FECES TREATMENT APPARATUS AND INDIVIDUAL FECES TREATMENT SYSTEM INCLUDING SAME Non-Final OA Samsung Electronics Co., Ltd.
19075599 REPURPOSING FLUIDIZED CATALYTIC CRACKING (FCC) SYSTEMS TO GENERATE RENEWABLE FUEL INTERMEDIATE COMPOSITIONS Non-Final OA CHEVRON U.S.A. INC.
18555135 SORBENTS AND METHODS FOR THE CAPTURE AND DEFLUORINATION OF PER AND POLY FLUOROALKYL SUBSTANCES (PFAS) Non-Final OA CLAROS TECHNOLOGIES INC.
18528114 NICKEL OXIDE (NiO)-DECORATED CERAMIC-ALUMINA POLYMERIC MEMBRANE FOR SEPARATION OF OIL-IN-WATER EMULSIONS Non-Final OA KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
18466395 LINEAR MULTIFUNCTIONAL ALIPHATIC AND HYPER-CROSS-LINKED POLYAMIDE MEMBRANE Non-Final OA KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
18021639 Sludge Treatment Process Non-Final OA LG Chem, Ltd.
17708642 EXTRACTION SOLVENTS FOR PLASTIC-DERIVED SYNTHETIC FEEDSTOCK Final Rejection ECOLAB USA INC.
18261618 HYDROTHERMAL SYSTEM FOR TREATMENT OF ADSORBENT REGENERATION BYPRODUCTS Non-Final OA University of Washington
18197077 ANALYSIS ASSISTANCE DEVICE, ANALYSIS ASSISTANCE METHOD AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING ANALYSIS ASSISTANCE PROGRAM Final Rejection SHIMADZU CORPORATION
17782656 CHROMATOGRAPH SYSTEM Final Rejection SHIMADZU CORPORATION
18078768 MULTI-CYCLONE VACUUM EXCAVATION SYSTEM Final Rejection The Charles Machine Works, Inc.
18522985 METHODS FOR RECOVERING FLY ASH USING A SELECTIVE FLOCCULANT Non-Final OA CHEMTREAT, INC.
18264668 FIBER-BASED MATERIALS FOR WATER TREATMENT Non-Final OA THE ROYAL INSTITUTION FOR THE ADVANCEMENT OF LEARNING/MCGILL UNIVERSITY
18572283 Environmental-friendly Process for the Treatment of Wastewater Non-Final OA UMICORE
18577234 DESCALING FORMULATION AND METHOD FOR DISSOLVING AND CLEANING SCALE DEPOSITION ON A SURFACE OF SYSTEM Non-Final OA HINDUSTAN PETROLEUM CORPORATION LIMITED
17884950 METHOD FOR DETECTING AND CLEANING INDOOR AIR POLLUTION Non-Final OA Microjet Technology Co., Ltd.
18316339 WASTE COLLECTION APPARATUS AND WAVE GLIDER Non-Final OA EVOLUTIVE LABS CO., LTD.
18606313 METHODS AND CATALYSTS FOR CARBON DIOXIDE CONVERSION TO LONG-CHAIN HYDROCARBONS Non-Final OA Air Company Holdings, Inc.
18297991 LIQUID QUALITY SYSTEM WITH DRAG-INDUCING PORTIONS Non-Final OA Advanced Drainage Systems, Inc.
18402540 METHOD AND SYSTEM FOR EXTRACTION OF CANNABINOIDS Non-Final OA Nakatomi Trading, LLC
18531072 SYSTEM AND METHOD FOR FLUID TREATMENT WITH PLASMA DISCHARGES Non-Final OA Onvector LLC
17543733 CATALYTIC DEPOLYMERISATION OF POLYMERIC MATERIALS Final Rejection GreenMantra Recycling Technologies Ltd.
18502203 SANITARY MEMBRANE LEAF PACKET AND MEMBRANE ELEMENT INCLUDING SAME Non-Final OA Solecta, Inc.
18287449 MULTI-CYCLONE SEDIMENT FILTER Non-Final OA WATERCO LIMITED
18008286 APPARATUS AND METHOD FOR PRECIPITATION OF SOLIDS IN HYDROCARBON FLOW SYSTEMS Final Rejection Empig AS
18266558 FILTER DEVICE FOR FILTERING INSOLUBLE MATERIAL Non-Final OA Pi-Design AG
18186784 EASILY REPAIRABLE MAIN WASH BASKET FOR WASHING CANNABIS Non-Final OA John C. Digertt, Inc.
15734067 Method and Device for Extracting Clean Liquid from Slurry Reactor Non-Final OA Institute of Process Engineering, Chinese Academy of Sciences
18111088 REMOVAL OF ALDEHYDES IN ACETIC ACID PRODUCTION Non-Final OA LyondellBasell Acetyls, LLC
17322351 SORBENT DEVICES Non-Final OA CALGON CARBON CORPORATION

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