The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 2024
Filed:
May. 10, 2019
Celgard, Llc, Charlotte, NC (US);
Kang Karen Xiao, Mississauga, CA;
Stefan Reinartz, Waxhaw, NC (US);
Takahiko Kondo, Shiga, JP;
Hisaki Ikebata, Shizuoka, JP;
Eric J. Penegar, Fort Mill, SC (US);
Robert Nark, Fort Mill, SC (US);
Changqing Wang Adams, Fort Mill, SC (US);
Masaaki Okada, Charlotte, NC (US);
Brian R. Stepp, Scottsdale, AZ (US);
Eric Robert White, Fort Mill, SC (US);
Allen M. Donn, Rock Hill, SC (US);
Katharine Chemelewski, Campbell, CA (US);
Celgard, LLC, Charlotte, NC (US);
Abstract
Described herein is a multilayer microporous film or membrane that may exhibit improved properties, including improved dielectric break down and strength, compared to prior monolayer or tri-layer microporous membranes of the same thickness. The preferred multilayer microporous membrane comprises microlayers and one or more lamination interfaces or barriers. Also disclosed is a battery separator or battery comprising one or more of the multilayer microporous films or membranes. The inventive battery and battery separator is preferably safer and more robust than batteries and battery separators using prior monolayer and tri-layer microporous membranes. Also, described herein is a method for making the multilayer microporous separators, membranes or films described herein.