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:
Feb. 10, 2015
Filed:
Jun. 08, 2010
Applicants:
Takeshi Ishihara, Nasushiobara, JP;
Satoshi Miyaoka, Nasushiobara, JP;
Koichi Kono, Nasushiobara, JP;
Patrick Brant, Seabrook, TX (US);
Inventors:
Takeshi Ishihara, Nasushiobara, JP;
Satoshi Miyaoka, Nasushiobara, JP;
Koichi Kono, Nasushiobara, JP;
Patrick Brant, Seabrook, TX (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); B32B 27/32 (2006.01); H01M 2/14 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 2/1653 (2013.01); H01M 2/145 (2013.01); H01M 2/1686 (2013.01); H01M 10/0525 (2013.01); Y02T 10/7011 (2013.01);
Abstract
The present invention relates to microporous membranes comprising polymer and having well-balanced permeability and heat shrinkage, especially heat shrinkage at elevated temperature. The invention also relates to methods for making such membranes, and the use of such membranes as battery separator film in, e.g., lithium ion secondary batteries.