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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 10411237 B1

PDFFull Text
Date of Patent:
Sep. 10, 2019

Filed:

May. 29, 2014

Multilayer, microporous polyolefin membrane, and production method thereof

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventor:

Takeshi Ishihara, Nasushiobara, JP;

Assignee:

TORAY INDUSTRIES, INC., Tokyo, JP;

Attorney:

Kilpatrick Townsend & Stockton LLP

Primary Examiner:

Catherine S Branch

Int. Cl.
CPC ...
H01M 2/16 (2006.01); H01M 2/14 (2006.01); B29C 47/00 (2006.01); B01D 71/26 (2006.01); B29C 48/08 (2019.01); B32B 27/32 (2006.01); B32B 27/08 (2006.01); B01D 69/02 (2006.01); B01D 67/00 (2006.01); B01D 69/12 (2006.01); B29K 23/00 (2006.01);
U.S. Cl.
CPC ...
H01M 2/1686 (2013.01); B01D 67/0027 (2013.01); B01D 69/02 (2013.01); B01D 69/12 (2013.01); B01D 71/26 (2013.01); B29C 48/08 (2019.02); B32B 27/08 (2013.01); B32B 27/32 (2013.01); H01M 2/145 (2013.01); H01M 2/1653 (2013.01); B01D 2325/34 (2013.01); B29K 2023/0675 (2013.01); B29K 2023/12 (2013.01); B32B 2250/03 (2013.01); B32B 2307/516 (2013.01); B32B 2307/718 (2013.01);
Abstract

Provided is a microporous polyolefin membrane which has excellent oxidation resistance and electrolyte injection performance and further has excellent permeability and strength balance. The multilayer, microporous polyolefin membrane has a first microporous layer containing polypropylene. The electrolyte injection performance is 20 seconds or less, at least one surface layer is the first microporous layer, and the PP distribution in the first microporous layer is uniform in the in-plane direction.

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Ishihara, Takeshi. (2019). Multilayer, microporous polyolefin membrane, and production method thereof (U.S. Patent No. 10411237). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10411237

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