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:
Dec. 25, 2012
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:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
Embodiments of the invention relate to microporous membranes that include first and second layers. The first layer includes ≦20.0 wt. % polymethylpentene and the second layer includes a compatibilizer. The invention also relates to methods for making such membranes and the use of such membranes as battery separator film.