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:
May. 24, 2005
Filed:
Sep. 13, 1999
Kazuya Hiratsuka, Kanagawa, JP;
Manabu Suhara, Kanagawa, JP;
Takeshi Kawasato, Kanagawa, JP;
Naruaki Tomita, Kanagawa, JP;
Naoki Yoshida, Kanagawa, JP;
Yoshiaki Higuchi, Kanagawa, JP;
Kazuya Hiratsuka, Kanagawa, JP;
Manabu Suhara, Kanagawa, JP;
Takeshi Kawasato, Kanagawa, JP;
Naruaki Tomita, Kanagawa, JP;
Naoki Yoshida, Kanagawa, JP;
Yoshiaki Higuchi, Kanagawa, JP;
Asahi Glass Company Ltd., Tokyo, JP;
Abstract
An electric double layer capacitor which has a low internal resistance and a large capacitance per unit volume and which is excellent in the voltage retention property, is provided. In a non-aqueous type electric double layer capacitor having a separator disposed between a positive electrode and a negative electrode made of carbonaceous electrodes, the separator comprises a sheet having a thickness of from 10 to 100 μm and a porosity of from 50 to 90% and a netted spacer having a thickness of from 10 to 100 mm, a numerical aperture of from 30 to 85% and an opening of from 50 to 350 mesh, laminated one on the other.