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. 08, 2012
Filed:
Dec. 29, 2008
Katsunori Nishimura, Hitachiota, JP;
Jinichi Imahashi, Hitachi, JP;
Masahiro Komachiya, Hitachinaka, JP;
Ko Takahashi, Hitachi, JP;
Katsunori Nishimura, Hitachiota, JP;
Jinichi Imahashi, Hitachi, JP;
Masahiro Komachiya, Hitachinaka, JP;
Ko Takahashi, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A fuel cell system for power generation comprising a solid polymer type fuel cell having a solid polymer electrolyte membrane for separating an anode gas and a cathode gas, a resistor, an inverter, a switch for switching the inverter and the resister with respect to the fuel cell, the switch and the inverter, a supply conduit and discharge conduit for the anode gas and the cathode gas, and a supply vale and a discharge valve. When a molar ratio of the hydrogen contained in the anode gas to oxygen contained in the cathode gas becomes 2/1 or less at the time of the stop of the fuel cell, the supply valve for air is closed.