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. 02, 2014
Filed:
Mar. 14, 2008
Hideaki Katayama, Osaka, JP;
Yoshinori Sato, Osaka, JP;
Toshihiro Abe, Osaka, JP;
Nobuaki Matsumoto, Osaka, JP;
Hideaki Katayama, Osaka, JP;
Yoshinori Sato, Osaka, JP;
Toshihiro Abe, Osaka, JP;
Nobuaki Matsumoto, Osaka, JP;
Hitachi Maxwell, Ltd., Ibaraki-Shi, Osaka, JP;
Abstract
A separator for an electrochemical device of the present invention includes a porous film including: a filler; an organic binder; and at least one resin selected from resin A that has a melting point of 80 to 140° C. and resin B that absorbs a non-aqueous electrolyte and swells upon heating and whose swelling degree increases with increasing temperature, and the filler contains boehmite having a secondary particle structure in which primary particles are connected.