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. 04, 2010
Filed:
Apr. 22, 2003
Nozomu Sugo, Okayama, JP;
Hideharu Iwasaki, Okayama, JP;
Takanori Kitamura, Okayama, JP;
Tatsuo Morotomi, Ibaraki, JP;
Tsuyoshi Kowaka, Okayama, JP;
Teruhiro Okada, Okayama, JP;
Shushi Nishimura, Okayama, JP;
Takeshi Fujino, Saitama, JP;
Shigeki Oyama, Saitama, JP;
Yuji Kawabuchi, Saitama, JP;
Nozomu Sugo, Okayama, JP;
Hideharu Iwasaki, Okayama, JP;
Takanori Kitamura, Okayama, JP;
Tatsuo Morotomi, Ibaraki, JP;
Tsuyoshi Kowaka, Okayama, JP;
Teruhiro Okada, Okayama, JP;
Shushi Nishimura, Okayama, JP;
Takeshi Fujino, Saitama, JP;
Shigeki Oyama, Saitama, JP;
Yuji Kawabuchi, Saitama, JP;
Kuraray Chemical Co., Ltd., Bizen-shi, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
Activated carbon useful as polarizable electrode material for an electric double-layer capacitor can be obtained by mixing a carbonaceous material and an alkali metal hydroxide while maintaining a solid state, granulating the obtained mixture while maintaining its solid state, dehydrating the obtained granulated substance while maintaining its solid state, and subjecting the granulated dehydration product obtained in the dehydration step to an activation treatment. The preferred pressure of the granulation treatment in the granulation step is 0.01 to 300 Torr, and the preferred temperature of the granulation treatment is 90 to 140° C. The preferred pressure of the dehydration treatment in the dehydration step is 0.01 to 10 Torr, and the preferred temperature of the dehydration treatment is 200 to 400° C.