Prosecution Insights
Last updated: April 19, 2026

Examiner: CALDERON, DAVID ANDREW

Tech Center 1700 • Art Units: 1742

This examiner grants 0% of resolved cases

Performance Statistics

%
Allow Rate
-65.0% vs TC avg
10
Total Applications
Interview Lift
999
Avg Prosecution Days
Based on 0 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
26.9%
§102 Novelty
53.9%
§103 Obviousness
19.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18480949 METHODS FOR MAKING ZEOLITE-Y PARTICLES Non-Final OA Saudi Arabian Oil Company
18350856 CATALYST Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18263724 METHOD FOR MANUFACTURING BIMETALLIC HYDROGENATION CATALYST Non-Final OA HANWHA SOLUTIONS CORPORATION
18227114 ELECTROCATALYSTS FOR THE OXYGEN EVOLUTION REACTION IN ACID CONDITIONS Non-Final OA Toyota Motor Engineering & Manufacturing North America, Inc.
18361991 ZEOLITE MEMBRANE COMPLEX, SEPARATION APPARATUS, MEMBRANE REACTOR, AND METHOD OF PRODUCING ZEOLITE MEMBRANE COMPLEX Non-Final OA NGK INSULATORS, LTD.
18284707 EXHAUST GAS PURIFYING CATALYST COMPOSITION AND EXHAUST GAS PURIFYING CATALYST Non-Final OA MITSUI MINING & SMELTING CO., LTD.
18556343 HYDROGENATION OF DIENALS OR DIENONES WITH RHODIUM COMPLEXES UNDER CARBON MONOXIDE FREE ATMOSPHERE Non-Final OA Firmenich SA
18263646 GASOLINE ENGINE EXHAUST GAS PURIFYING CATALYST FILTER Non-Final OA N.E. CHEMCAT CORPORATION
18261300 PSEUDO SOLID STATE CRYSTALLIZATION OF ZEOLITES AND USES THEREIN Non-Final OA Ketjen Limited Liability Company

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