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:
Oct. 11, 2005
Filed:
Jan. 18, 2002
Nozomu Matsukawa, Nara, JP;
Masayoshi Hiramoto, Ikoma, JP;
Akihiro Odagawa, Nara, JP;
Mitsuo Satomi, Katano, JP;
Yasunari Sugita, Kadoma, JP;
Nozomu Matsukawa, Nara, JP;
Masayoshi Hiramoto, Ikoma, JP;
Akihiro Odagawa, Nara, JP;
Mitsuo Satomi, Katano, JP;
Yasunari Sugita, Kadoma, JP;
Matsushita Electric Co., Ltd., Osaka, JP;
Abstract
A magnetic memory device that includes a magnetoresistive element, a conductive wire for generating magnetic flux that changes a resistance value of the magnetoresistive element, and at least one ferromagnetic member through which the magnetic flux passes. The ferromagnetic member forms a magnetic gap at a position where the magnetic flux passes through the magnetoresistive element. A length of the magnetoresistive element that is measured in a direction parallel to the magnetic gap is less than or equal to twice the length of the magnetic gap. A length of a path traced by the magnetic flux in the ferromagnetic member is less than or equal to 1.0 μm. The length of the path is also greater than or equal to five times the thickness of the ferromagnetic member and/or is greater than or equal to a length of the ferromagnetic member in the direction of the drawing of the conductive wire divided by five.