Prosecution Insights
Last updated: October 02, 2026

Examiner: DAVIS, SHENG HAN

Tech Center 2800 • Art Units: 1724 1726 1732 1736 1793 2881

This examiner grants 66% of resolved cases

Analysis

Sheng Han Davis works in Tech Center 2800 and Art Unit 1724. He has managed 1097 resolved cases, which have an allowance rate of 66.3 percent. This 66.3 percent rate serves as a baseline for evaluating the probability of a grant during the examination process. The 1097 resolved cases provide a large data set for understanding his historical disposition of applications.

The median time to allowance for these cases is 1166 days. The data also shows an interview lift of 33.3 percent. This 33.3 percent lift indicates that direct communication with the examiner is associated with a higher probability of allowance. Practitioners can use this information to decide whether to request an interview during the 1166-day median prosecution cycle in Art Unit 1724.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

66.3%
Allow Rate
-1.7% vs TC avg
1,152
Total Applications
+33.3%
Interview Lift
1166
Avg Prosecution Days
Based on 1097 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
6.8%
§102 Novelty
65.9%
§103 Obviousness
20.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18616675 ELECTRICALLY HEATED CATALYST DEVICE Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18684358 NANODIAMOND AQUEOUS DISPERSION Non-Final OA DAICEL CORPORATION
18291831 COMPOSITE COMPRISING ORGANOMETAL NANOSTRUCTURE POWDER AND METHOD FOR PREPARING SAME Non-Final OA LG CHEM, LTD.
18404401 SIMULTANEOUS H2 PRODUCTION AND CO2 CAPTURE FROM ACID GAS STREAM Non-Final OA Saudi Arabian Oil Company
18565772 OXYGEN ION TRANSPORT MATERIALS AND RELATED DEVICES Non-Final OA Wisconsin Alumni Research Foundation
18636020 SEPARATION OF METAL IONS BY LIQUID-LIQUID EXTRACTION Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18283886 METHOD FOR PRODUCING A SYNTHESIS GAS MIXTURE Final Rejection BASF SE
18550378 PROCESS FOR MAKING PARTICULATE OXYHYDROXIDE OR OXIDES Non-Final OA BASF SE
17783004 PROCESS FOR PREPARING A MOLDING COMPRISING A ZEOLITE CATALYST AND METHOD FOR CONVERTING OXYGENATES TO OLEFINS USING THE CATALYTIC MOLDING Non-Final OA BASF SE
18294001 MOLYBDIC ACID SOLUTION AND METHOD FOR PRODUCING THE SAME, MOLYBDENUM OXIDE POWDER AND METHOD FOR PRODUCING THE SAME Non-Final OA Mitsui Mining & Smelting Co., Ltd.
17801349 EXHAUST GAS PURIFICATION CATALYST DEVICE Final Rejection CATALER CORPORATION
18292323 CATALYST AND METHOD EMBODIMENTS FOR MAKING PARA-XYLENE AND ORTHO-XYLENE Non-Final OA Battelle Memorial Institute
18243215 SELECTIVE CARBON BINDING ON CARBON QUANTUM DOTS Final Rejection University of Tennessee Research Foundation
18113285 Nano-thin BixOySez low-temperature oxygen transporter membrane for oxygen transport, separation, and two-dimensional (2D) material manipulation Non-Final OA The Government of the United States of America, as represented by the Secretary of the Navy
18574719 PLATE-SHAPED IRON OXIDE PARTICLES AND METHOD FOR PRODUCING IRON OXIDE PARTICLES Non-Final OA DIC Corporation
18284796 SPHERICAL INORGANIC POWDER AND LIQUID ENCAPSULATION MATERIAL Non-Final OA DENKA COMPANY LIMITED
18282319 SILICON DIOXIDE POWDER Non-Final OA DENKA COMPANY LIMITED
18409927 CATALYST COMPOSITION Non-Final OA JOHNSON MATTHEY PUBLIC LIMITED COMPANY
18050067 CATALYSTS FOR GASOLINE EXHAUST GAS TREATMENTS WITH IMPROVED AMMONIA EMISSION CONTROL Final Rejection Johnson Matthey Public Limited Company
18567259 RECYCLE CONTENT AMMONIA Non-Final OA ExxonMobil Product Solutions Company

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