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:
Jul. 15, 2008
Filed:
Aug. 06, 2007
Kenichi Meguro, Kaisei, JP;
Hiroyuki Hoshiya, Odawara, JP;
Kazuhiro Nakamoto, Ninomiya, JP;
Yasuyuki Okada, Tokyo, JP;
Yasunori Abe, Moka, JP;
Kenichi Meguro, Kaisei, JP;
Hiroyuki Hoshiya, Odawara, JP;
Kazuhiro Nakamoto, Ninomiya, JP;
Yasuyuki Okada, Tokyo, JP;
Yasunori Abe, Moka, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
The present invention provides a magnetic sensor suitable for high resolution and having high reliability by achieving stable output even at the occurrence of variations in a gap between a magnetic medium and the magnetic sensor, and a magnetic encoder using the magnetic sensor. The present invention uses a magnetoresistive element having magnetoresistive properties that satisfy the inequation, H10−50<H50−90, where H10−50 represents a magnetic field required for a resistance change from ΔR×10% to ΔR×50% with respect to a maximum amount of resistance change ΔR on a magnetoresitance effect curve, and H50−90 represents a magnetic field required for a resistance change from ΔR×50% to ΔR×90%.