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. 16, 2016
Filed:
Aug. 02, 2010
Hirohiko Hasegawa, Niihama, JP;
Yasuo Shinohara, Tsuchiura, JP;
Daizaburo Yashiki, Niihama, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
A porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, in which the number of branches per 1000 carbon atoms that constitute the main chain of the polyolefin wax is 15 or less; a porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, and which does not substantially contain a component that melts at a temperature of 60° C. or lower; a laminated porous film which comprises one of the porous films and a heat-resistance porous layer laminated on at least one surface of the porous film; and a separator for batteries, which comprises the porous film or the laminated porous film.