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:
Aug. 31, 2010
Filed:
Aug. 01, 2006
Applicants:
Yoichi Ishizaki, Aichi, JP;
Katsuya Kogiso, Aichi, JP;
Toru Minagawa, Aichi, JP;
Fumihiro Suzuki, Aichi, JP;
Inventors:
Yoichi Ishizaki, Aichi, JP;
Katsuya Kogiso, Aichi, JP;
Toru Minagawa, Aichi, JP;
Fumihiro Suzuki, Aichi, JP;
Assignee:
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/30 (2006.01); G01R 33/09 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magnetic sensor that is inexpensive and suppresses changes in offset voltage caused by wear. The magnetic sensor includes magnetoresistance elements having electrical resistances that change in accordance with magnetism changes. The magnetic sensor detects magnetism based on changes in the electrical resistances. The magnetoresistance elements are covered by a protective film. Part of the protective film is etched and eliminated to form a recess.