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. 23, 2002
Filed:
Aug. 26, 1999
Shigeru Tadokoro, Odawara, JP;
Izuru Ishii, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A tunnel junction MR head can be easily manufactured and arranged as follow. A first tunnel junction is formed by a magnetization free layer, a first magnetization pinned layer and a thin insulated layer formed between the both layers. A second tunnel junction is formed by the magnetization free layer, a second magnetization pinned layer and an insulated layer. The first and second tunnel junctions are connected to both ends of the magnetization free layer through the magnetization free layer. A detection current flowing from a first electrode connected to the first tunnel junction is passed to a second electrode through the first tunnel junction, the magnetization free layer and the second tunnel junction.