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:
Jun. 07, 2011
Filed:
Jun. 02, 2008
Kenichiro Yamada, Tokyo, JP;
Hitoshi Iwasaki, Kanagawa-ken, JP;
Junichi Akiyama, Kanagawa-ken, JP;
Masayuki Takagishi, Tokyo, JP;
Tomomi Funayama, Saitama-ken, JP;
Masahiro Takashita, Kanagawa-ken, JP;
Mariko Shimizu, Kanagawa-ken, JP;
Shuichi Murakami, Tokyo, JP;
Tadashi Kai, Tokyo, JP;
Kenichiro Yamada, Tokyo, JP;
Hitoshi Iwasaki, Kanagawa-ken, JP;
Junichi Akiyama, Kanagawa-ken, JP;
Masayuki Takagishi, Tokyo, JP;
Tomomi Funayama, Saitama-ken, JP;
Masahiro Takashita, Kanagawa-ken, JP;
Mariko Shimizu, Kanagawa-ken, JP;
Shuichi Murakami, Tokyo, JP;
Tadashi Kai, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A magnetic writing head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes are operable to pass a current through the laminated body.