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:
Nov. 18, 2008
Filed:
May. 19, 2004
Takumi Katsurao, Fukushima-ken, JP;
Katsuo Horie, Fukushima-ken, JP;
Yukio Ichikawa, Fukushima-ken, JP;
Aisaku Nagai, Fukushima-ken, JP;
Takumi Katsurao, Fukushima-ken, JP;
Katsuo Horie, Fukushima-ken, JP;
Yukio Ichikawa, Fukushima-ken, JP;
Aisaku Nagai, Fukushima-ken, JP;
Kureha Corporation, Tokyo, JP;
Abstract
A process for producing a polymer electrolyte for a nonaqueous battery by introducing 80 to 97 wt. % of vinylidene fluoride monomer and 3 to 20 wt % of at least one monomer copolymerizable with vinylidene fluoride monomer simultaneously all at once into a polymerization vessel, polymerizing the monomers to provide a vinylidene fluoride copolymer having polymerized units of the monomers and having an inherent viscosity of 1.5 to 10 dl/g, and impregnating the vinylidene fluoride copolymer with a nonaqueous electrolytic solution to provide a polymer electrolyte.