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.:

US 6949920 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 27, 2005

Filed:

Oct. 27, 2003
Applicants:

Masahiro Mohri, Utsunomiya, JP;

Yosuke Fujii, Tochigi-ken, JP;

Katsumi Hayashi, Utsunomiya, JP;

Toshiya Wakahoi, Utsunomiya, JP;

Inventors:

Masahiro Mohri, Utsunomiya, JP;

Yosuke Fujii, Tochigi-ken, JP;

Katsumi Hayashi, Utsunomiya, JP;

Toshiya Wakahoi, Utsunomiya, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R033/06 ;
U.S. Cl.
CPC ...
Abstract

A fuel cell system includes a fuel cell. A current density measuring apparatus is provided on a cathode side of the fuel cell. The current density measuring apparatus includes a plurality of Hall elements provided at positions corresponding to measuring positions in an electrode surface. Each of the Hall element is attached to a ferrite core fitted to a pole of a sensor mounting plate. The ferrite core and the Hall element attached to the pole make up a current sensor.


Find Patent Forward Citations

Mohri, Masahiro. (2005). Apparatus for measuring current density of fuel cell (U.S. Patent No. 6949920). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6949920

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