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:
Oct. 08, 2024
Filed:
Aug. 09, 2019
Applicant:
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Inventors:
Akihisa Yamashita, Tokyo, JP;
Manabu Sekiguchi, Tokyo, JP;
Assignee:
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 23/06 (2006.01); C08J 9/26 (2006.01); H01M 50/409 (2021.01); H01M 50/417 (2021.01); H01M 50/491 (2021.01); H01M 50/494 (2021.01);
U.S. Cl.
CPC ...
C08L 23/06 (2013.01); C08J 9/26 (2013.01); H01M 50/409 (2021.01); H01M 50/417 (2021.01); H01M 50/491 (2021.01); C08J 2323/06 (2013.01); C08J 2423/12 (2013.01); H01M 50/494 (2021.01);
Abstract
Provided is a polyolefin microporous membrane having a loss tangent (tan δ) at 230° C. of 0.35 or more and less than 0.60 in melt viscoelasticity measurement.