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. 30, 2014
Filed:
Aug. 30, 2007
Hiroyuki Norieda, Tokyo, JP;
Kotaro Kobayashi, Tokyo, JP;
Hiroyuki Norieda, Tokyo, JP;
Kotaro Kobayashi, Tokyo, JP;
W. L. Gore & Associates, Co., Ltd., Tokyo, JP;
Abstract
Disclosed is an electric double layer capacitor comprising a polarizable electrode layer that contains an activated carbon, a conductive agent, and a binder, wherein an external specific surface area of the activated carbon (defined as a specific surface area calculated from a nitrogen absorption isotherm by a t-plot method by excluding micropores of pore diameter smaller than 20 angstroms), per unit volume of the polarizable electrode layer, lies within a range of 450 to 800 m/cm, and a volume based on inter-particle interstices per unit volume of the polarizable electrode layer lies within a range of 0.05 to 0.12 cm/cm. The electric double layer capacitor according to the present invention is particularly suited to large current, quick discharge applications.