Prosecution Insights
Last updated: April 19, 2026

Examiner: PULLEN, NIKOLAS TAKUYA

Tech Center 1700 • Art Units: 1733 1738

This examiner grants 52% of resolved cases

Performance Statistics

51.8%
Allow Rate
-13.2% vs TC avg
158
Total Applications
+8.2%
Interview Lift
1144
Avg Prosecution Days
Based on 110 resolved cases, 2023–2026

Rejection Statute Breakdown

0.5%
§101 Eligibility
12.0%
§102 Novelty
45.2%
§103 Obviousness
35.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18616794 METHODS AND SYSTEMS FOR LEACHING A METAL-BEARING MATERIAL Non-Final OA FREEPORT MINERALS CORPORATION
18292089 Leaching Method Non-Final OA TECHNOLOGICAL RESOURCES PTY. LIMITED
18038099 Biomass Direct Reduced Iron Non-Final OA Technological Resources Pty. Limited
18038139 BIOMASS DIRECT REDUCED IRON Non-Final OA Technological Resources Pty. Limited
17926819 Biomass Direct Reduced Iron Non-Final OA Technological Resources Pty. Limited
18230333 INSPECTION CUP FOR INSPECTING IMPURITY IN MOLTEN METAL FOR DIE CASTING AND METHOD OF INSPECTING IMPURITY IN MOLTEN METAL FOR DIE CASTING USING INSPECTION CUP Final Rejection KIA CORPORATION
19248152 METHOD AND APPARATUS FOR METALS, ALLOYS, MATTES, OR ENRICHED AND CLEANED SLAGS PRODUCTION FROM PREDOMINANTLY OXIDE FEEDS Final Rejection Hertha Metals, Inc.
18238619 CONTINUOUS CAST WIRE ROD OF Cu-Zn-Sn-BASED ALLOY Non-Final OA MITSUBISHI MATERIALS CORPORATION
16873071 Mechanochemical recovery of Co, Li and other constituents from spent lithium-ion batteries Final Rejection Iowa State University Research Foundation, Inc.
18870461 PRECIPITATION SYSTEM FOR HYDROMETALLURGICAL PROCESSING OF LATERITE NICKEL ORE Non-Final OA PT GEM INDONESIA NEW ENERGY MATERIALS
17620447 ATOMIZATION DEVICE Non-Final OA UNIVERSITAT POLITÈCNICA DE CATALUNYA
18494001 METHOD FOR CHARGING RAW MATERIALS INTO BLAST FURNACE Non-Final OA JFE Steel Corporation
17908442 MECHANICAL AUGER RECIRCULATION WELL Non-Final OA PYROTEK, INC.
18496481 CADMIUM REMOVAL IN LITHIUM-ION BATTERY RECYCLING Non-Final OA II-VI Delaware, Inc.
18711938 A METHOD FOR IRON AND COPPER REMOVAL FROM SOLUTION USING METALLIC REAGENTS Final Rejection Umicore
16500127 PROCESS FOR THE RECOVERY OF LITHIUM Non-Final OA Umicore
16877364 Molten Metal Transfer System and Method Final Rejection Molten Metal Equipment Innovations, LLC
18240059 Metal Recovery Agent, Metal Compound Recovery Agent, and Method for Recovering Metal or Metal Compound Non-Final OA Galdieria Co., Ltd.
17531428 BIOMASS PYROLYSIS INTEGRATED WITH BIO-REDUCTION OF METAL ORES, HYDROGEN PRODUCTION, AND/OR ACTIVATED-CARBON PRODUCTION Final Rejection Carbon Technology Holdings, LLC
17485356 BIO-REDUCTION OF METAL ORES INTEGRATED WITH BIOMASS PYROLYSIS Final Rejection Carbon Technology Holdings, LLC
18213560 GEOTHERMALLY POWERED IRON PRODUCTION SYSTEMS AND METHODS Non-Final OA EnhancedGEO Holdings, LLC
18273597 Method for biological recovery of metals from electrical and electronic waste Non-Final OA UNIVERSITAT POLITECNICA DE CATALUNYA
18352745 LOW TEMPERATURE DIRECT REDUCTION OF METAL OXIDES VIA THE IN SITU PRODUCTION OF REDUCING GAS Non-Final OA Environmental Clean Technologies Limited
18255702 METHOD FOR MELTING FERROUS METALS, NON-FERROUS METALS, MACHINING WASTE AND SCRAP AND STEEL Final Rejection COMPAGNIA COMMERCIALE SRL
18255015 METHOD FOR INCREASING COMPOSITIONAL UNIFORMITY OF ELEMENT AL IN TITANIUM-ALLOY EB INGOT Non-Final OA LUOYANG SUNRUI TITANIUM PRECISION CASTING CO., LTD.
18253904 PROCESS FOR GOLD AND/OR PLATINUM GROUP METALS HEAP LEACHING WITH LIME Non-Final OA S.A. Lhoist Recherche et Developpement
17425917 PROCESS AND SYSTEM FOR EXTRACTION OF RARE EARTH ELEMENTS USING AN ACID SOAK Final Rejection His Majesty the King in Right of Canada as Represented by the Minister of Natural Resources
17979350 METAL-DISSOLVING APPARATUS, PROCESSES AND USES THEREOF Non-Final OA HATCH LTD.
17760241 RECOVERY OF VANADIUM FROM ALKALINE SLAG MATERIALS Non-Final OA AVANTI MATERIALS LTD
16966649 Process For Extracting Values from Lithium Slag Non-Final OA Tianqi Lithium Kwinana Pty Ltd

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