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. 05, 2009
Filed:
May. 08, 2003
Shigeru Inai, Shioya-gun, JP;
Chikara Iwasawa, Saitama, JP;
Shinya Watanabe, Shioya-gun, JP;
Masahiko Sato, Utsunomiya, JP;
Yoshikazu Murakami, Utsunomiya, JP;
Shigeru Inai, Shioya-gun, JP;
Chikara Iwasawa, Saitama, JP;
Shinya Watanabe, Shioya-gun, JP;
Masahiko Sato, Utsunomiya, JP;
Yoshikazu Murakami, Utsunomiya, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A reference electrode is provided adjacent to an anode of a membrane electrode assembly. The potential difference between the reference electrode and the anode is measured by a control unit. The control unit compares the measured value and a map of the anode potential difference stored in the control unit. When the measured value indicates a relation line which is different from a reference line indicating that the fuel gas is sufficient, it is judged that shortage of the fuel gas occurs.