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. 19, 2005
Filed:
Dec. 01, 2003
Tamotsu Tano, Yamaguchi, JP;
Takashi Oyama, Yamaguchi, JP;
Akinori Mogami, Akishima, JP;
Makoto Takeuchi, Akishima, JP;
Hiroshi Kobayashi, Tokyo, JP;
Yukinori Kude, Yokohama, JP;
Tamotsu Tano, Yamaguchi, JP;
Takashi Oyama, Yamaguchi, JP;
Akinori Mogami, Akishima, JP;
Makoto Takeuchi, Akishima, JP;
Hiroshi Kobayashi, Tokyo, JP;
Yukinori Kude, Yokohama, JP;
Nippon Oil Corporation, Tokyo, JP;
JEOL Ltd., Tokyo, JP;
Nippon Petroleum Refining Co., Ltd., Tokyo, JP;
Abstract
A raw material composite 10 for a carbon material used in an electric double layer capacitor contains microcrystalline carbon having a layered crystal structure similar to graphite, and is formed a carbon material for an electric double layer capacitor by undergoing an activation treatment. Here, the raw material composite is characterized in that a Hardgrove grindability index HGI defined by ASTMD-409-71 is 50 or above, an interlayer distance dof the microcrystalline carbon determined by an X-ray diffraction method is 0.343 NM or below, and a crystallite size Lcof the microcrystalline carbon determined by the X-ray diffraction method is 3.0 nm or below.