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:
Apr. 30, 2013
Filed:
Feb. 23, 2012
Applicants:
Akira Morita, Kawasaki, JP;
Jun Yamamoto, Tokyo, JP;
Kazuyuki Ueda, Tokyo, JP;
Taihei Mukaide, Atsugi, JP;
Inventors:
Akira Morita, Kawasaki, JP;
Jun Yamamoto, Tokyo, JP;
Kazuyuki Ueda, Tokyo, JP;
Taihei Mukaide, Atsugi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 25/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a method for detecting the freezing of water within a fuel cell, precise detection can be performed using a phenomenon specific to the time when water starts to freeze to allow a reduction in erroneous activation. Detection at an early stage after the start of freezing is allowed, and hence measures can be taken against an output reduction before the water within the fuel cell completely freezes.