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:
Sep. 29, 2020
Filed:
Oct. 23, 2015
Applicant:
Celgard Llc, Charlotte, NC (US);
Inventors:
Donald K. Simmons, Fayetteville, GA (US);
Joseph G. Yaritz, Utica, KY (US);
Assignee:
Celgard, LLC, Charlotte, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); B01D 67/00 (2006.01); B29C 55/00 (2006.01); H01M 2/14 (2006.01); B01D 71/26 (2006.01); B29C 48/08 (2019.01); H01M 10/0525 (2010.01); B29L 31/00 (2006.01); B29K 105/04 (2006.01); B29K 23/00 (2006.01); H01M 10/0565 (2010.01); B29C 48/00 (2019.01);
U.S. Cl.
CPC ...
H01M 2/1653 (2013.01); B01D 67/002 (2013.01); B01D 71/26 (2013.01); B29C 48/08 (2019.02); B29C 55/005 (2013.01); H01M 2/145 (2013.01); H01M 10/0525 (2013.01); B01D 2325/02 (2013.01); B01D 2325/34 (2013.01); B29C 48/00 (2019.02); B29K 2023/0683 (2013.01); B29K 2105/04 (2013.01); B29L 2031/755 (2013.01); H01M 10/0565 (2013.01);
Abstract
A membrane is a microporous sheet made of a blend of a first ultra high molecular weight polyolefin and a second ultra high molecular weight polyolefin. Each polyolefin has a molecular weight, both of those molecular weights are greater than 1 million, and one molecular weight is greater than the other. Additionally, the intrinsic viscosity (IV) of the membrane may be greater than or equal to 6.3.