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:
Dec. 13, 2011
Filed:
Jul. 25, 2003
Hideki Sakai, Kanagawa, JP;
Takashi Tomita, Kanagawa, JP;
Ryosuke Takagi, Kanagawa, JP;
Yusuke Suzuki, Kanagawa, JP;
Tsuyonobu Hatazawa, Tokyo, JP;
Hideki Sakai, Kanagawa, JP;
Takashi Tomita, Kanagawa, JP;
Ryosuke Takagi, Kanagawa, JP;
Yusuke Suzuki, Kanagawa, JP;
Tsuyonobu Hatazawa, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A fuel cell which utilizes the biogenic metabolism to produce a high current density is provided. The fuel cell generates electric power in such a way that the fuel is decomposed stepwise by a plurality of enzymes and those electrons formed by oxidation are transferred to the electrode. The enzymes work such that the enzyme activity of the enzyme involved in decomposition in the early stage is smaller than the sum of the enzyme activities of the enzymes involved in decomposition in the later stage. In the case where a coenzyme is involved, the enzyme activity of the oxidase that oxidizes the coenzyme is greater than the sum of the enzyme activities of the enzymes involved in the formation of the reduced form of the coenzyme, out of the enzymes involved in the stepwise decomposition of the fuel.