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:
Jul. 20, 2010
Filed:
Jul. 03, 2003
Hideharu Iwasaki, Okayama, JP;
Nozomu Sugo, Okayama, JP;
Mitsunori Hitomi, Okayama, JP;
Shushi Nishimura, Okayama, JP;
Takeshi Fujino, Saitama, JP;
Shigeki Oyama, Saitama, JP;
Yuji Kawabuchi, Saitama, JP;
Hideharu Iwasaki, Okayama, JP;
Nozomu Sugo, Okayama, JP;
Mitsunori Hitomi, 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
In activated carbon obtained by subjecting a carbonaceous material to an activation treatment, the overall content of alkali metals is set at 100 ppm or less, or the overall content of heavy metals is set at 20 ppm or less and the overall content of alkali metals is set at 200 ppm or less. In cases where such activated carbon is used as a raw material in electronic devices, the formation of dendrites by the reductive deposition of alkali metals or heavy metals tends not to occur, so that problems such as short-circuiting or the like tend not to arise, and a good rate of self-discharge retention is shown.