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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.:

US 10784482 B1

PDFFull Text
Date of Patent:
Sep. 22, 2020

Filed:

Nov. 05, 2015

Microporous polyolefin film, separator for battery, and production processes therefor

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Naoki Mizuno, Nasushiobara, JP;

Masami Sugata, Nasushiobara, JP;

Assignee:

Toray Industries, Inc., Tokyo, JP;

Attorney:

DLA Piper LLP (US)

Primary Examiner:

Amanda C Walke

Int. Cl.
CPC ...
H01M 2/16 (2006.01); B32B 5/32 (2006.01); C08J 9/28 (2006.01); B32B 27/32 (2006.01); H01M 2/14 (2006.01); H01M 10/0525 (2010.01); H01M 10/0587 (2010.01);
U.S. Cl.
CPC ...
H01M 2/1653 (2013.01); B32B 5/32 (2013.01); B32B 27/32 (2013.01); C08J 9/28 (2013.01); H01M 2/145 (2013.01); H01M 2/1686 (2013.01); H01M 10/0525 (2013.01); H01M 10/0587 (2013.01);
Abstract

A polyolefin microporous membrane is suitable to provide thereon a porous layer having little variation in thickness, which has a fluctuation range of F25 value in the length direction of 1 MPa or less, and which has a length of 1,000 m or more (wherein the F25 value refers to a value obtained by: measuring a load value applied to a test specimen when the test specimen is stretched by 25% using a tensile tester; and dividing the load value by the value of the cross-sectional area of the test specimen).

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Mizuno, Naoki. (2020). Microporous polyolefin film, separator for battery, and production processes therefor (U.S. Patent No. 10784482). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10784482

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