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, 2015
Filed:
Nov. 17, 2008
Applicants:
Takeshi Ishihara, Saitama-ken, JP;
Kohtaro Kimishima, Kanagawa, JP;
Inventors:
Takeshi Ishihara, Saitama-ken, JP;
Kohtaro Kimishima, Kanagawa, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/14 (2006.01); H01M 2/16 (2006.01); B01D 69/12 (2006.01); B29C 55/00 (2006.01); B32B 5/32 (2006.01); B32B 27/32 (2006.01); B01D 71/26 (2006.01); B29K 105/04 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 2/1686 (2013.01); B01D 69/125 (2013.01); B29C 55/005 (2013.01); B32B 5/32 (2013.01); B32B 27/32 (2013.01); H01M 2/1653 (2013.01); B01D 71/26 (2013.01); B29K 2105/04 (2013.01); B32B 2250/24 (2013.01); B32B 2457/10 (2013.01); H01M 10/052 (2013.01); Y02T 10/7011 (2013.01);
Abstract
The invention relates to a microporous membrane having a relatively low heat shrinkage values along planar axes of the membrane. The invention also relates to a battery separator formed by such microporous membrane, and a battery comprising such a separator. Another aspect of the invention relates to a method for making the multi-layer, microporous polyolefin membrane, a method for making a battery using such a membrane as a separator, and a method for using such a battery.