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:
Nov. 25, 2008
Filed:
Feb. 20, 2007
Applicants:
Hiroyuki Hoshiya, Odawara, JP;
Kenichi Meguro, Kaisei, JP;
Kazuhiro Nakamoto, Ninomiya, JP;
Yasunori Abe, Moka, JP;
Inventors:
Hiroyuki Hoshiya, Odawara, JP;
Kenichi Meguro, Kaisei, JP;
Kazuhiro Nakamoto, Ninomiya, JP;
Yasunori Abe, Moka, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
To provide a magnetic encoder having high resolution and a high output, and a magnetoresistive sensor for an encoder. A fine sensor having a reduced demagnetization field is produced by: forming a free layer consists of a laminated soft magnetic film in which two soft magnetic layers are coupled in anti-parallel, and setting the width of a sensor unit to 2 μm to 4 μm.