Prosecution Insights
Last updated: April 19, 2026

Celgard LLC

12 pending office actions

Portfolio Summary

12
Total Pending OAs
5
Final Rejections
7
Non-Final OAs

Pending Office Actions

App #TitleExaminerArt UnitStatusFiled
18743035 IMPROVED MEMBRANES, CALENDERED MICROPOROUS MEMBRANES, BATTERY SEPARATORS, AND RELATED METHODS SMITH, DUANE 1759 Non-Final OA Jun 13, 2024
18709529 BATTERY SEPARATORS AND METHODS FOR TESTING THE SAME HOQUE, FARHANA AKHTER 2858 Non-Final OA May 13, 2024
18589298 COATED SEPARATORS, LITHIUM BATTERIES, AND RELATED METHODS EOFF, ANCA 1722 Non-Final OA Feb 27, 2024
18420873 ADDITIVES FOR IMPROVED BATTERY PERFORMANCE, IMPROVED ADDITIVE-CONTAINING MEMBRANES, IMPROVED BATTERY SEPARATORS, IMPROVED BATTERIES, AND RELATED METHODS DOMONE, CHRISTOPHER P 1725 Final Rejection Jan 24, 2024
18286123 WIDE MICROPOROUS FILM DILLON, DANIEL P 1783 Final Rejection Oct 08, 2023
18280227 HEAT STABILIZED MEMBRANE DAVIS, ZACHARY M 1783 Final Rejection Sep 03, 2023
18267075 DRY-PROCESS POLYETHYLENE MEMBRANES, COATED MEMBRANES, SEPARATORS, AND RELATED METHODS RHEE, JANE J 1724 Non-Final OA Jun 13, 2023
18015423 SECONDARY BATTERY WITH IMPROVED BATTERY SEPARATOR BLACKWELL-RUDASIL, RYAN KENZIE 1722 Non-Final OA Jan 10, 2023
17918571 ASYMMETRIC POROUS MEMBRANE CLARY, KAYLA ELAINE 1721 Final Rejection Oct 13, 2022
17613104 FUNCTIONAL COATING FOR SEPARATOR GODO, OLATUNJI A 1752 Non-Final OA Nov 22, 2021
17275677 MULTILAYER MEMBRANES, SEPARATORS, BATTERIES, AND METHODS TAKEUCHI, YOSHITOSHI 1723 Non-Final OA Mar 12, 2021
14958990 COATED SEPARATORS FOR LITHIUM BATTERIES AND RELATED METHODS WANG, EUGENIA 1759 Final Rejection Dec 04, 2015

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