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:
Jun. 16, 2026
Filed:
May. 27, 2021
Applicant:
Teijin Limited, Osaka, JP;
Inventors:
Assignee:
TEIJIN LIMITED, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 50/489 (2021.01); H01M 50/423 (2021.01); H01M 50/446 (2021.01); H01M 50/449 (2021.01);
U.S. Cl.
CPC ...
H01M 50/489 (2021.01); H01M 50/423 (2021.01); H01M 50/446 (2021.01); H01M 50/449 (2021.01);
Abstract
Provided is a separator for a non-aqueous secondary battery containing a porous substrate; and a porous layer that is provided on one side of the porous substrate, and that contains a resin and a filler, in which a shrinkage ratio in a MD direction, when heat-treated at 100° C. for 30 minutes under no tension, is more than 1.2% and less than or equal to 3.5%.
Sakurai, Hiroshi. (2026). Separator for non-aqueous secondary battery and non-aqueous secondary battery (U.S. Patent No. 12658530). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12658530
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile