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:
Apr. 27, 2004
Filed:
Dec. 21, 2001
Manabu Suhara, Yokohama, JP;
Kazuya Hiratsuka, Yokohama, JP;
Katsuji Ikeda, Yokohama, JP;
Takeshi Kawasato, Yokohama, JP;
Yoshiaki Higuchi, Yokohama, JP;
Takamichi Ishikawa, Kawasaki, JP;
Satoru Kuroki, Kawasaki, JP;
Sadao Kanetoku, Kawasaki, JP;
Naoki Yoshida, Yokohama, JP;
Naruaki Tomita, Yokohama, JP;
Asahi Glass Company Ltd., Tokyo, JP;
Abstract
An electric double layer capacitor including a positive electrode assembly and a negative electrode assembly, each electrode assembly having a porous layer including a carbonaceous powder and a fluorine-containing polymer formed on at least one side of an aluminum foil current collector, the positive electrode and the negative electrode being disposed so that the porous layer of the positive electrode assembly and the porous layer of the negative electrode assembly face each other with a separator interposed therebetween to form an element, the element being impregnated with a non-aqueous electrolyte and accommodated in a sealed container, wherein the thickness of the porous layer is from 80 to 200 &mgr;m, the thickness of the aluminum foil current collector is from 20 to 80 &mgr;m, the thickness of the separator is from 30 to 170 &mgr;m, and the density of the porous layer is from 0.50 to 0.80 g/cm , wherein the capacitor has such a structure that a plurality of the positive electrode assemblies and the negative electrode assemblies are alternately laminated with a separator interposed therebetween, or strip positive electrode assemblies and negative electrode assemblies are wound with a separator interposed therebetween.