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:
Sep. 24, 1991
Filed:
Oct. 12, 1989
Shinji Narishige, Mito, JP;
Katsuya Mitsuoka, Hitachi, JP;
Takao Imagawa, Sendai, JP;
Kouichi Nishioka, Hitachi, JP;
Akira Kumagai, Hitachi, JP;
Masaaki Sano, Hitachi, JP;
Yutaka Sugita, Hitachi, JP;
Reiko Arai, Mito, JP;
Tetsuo Kobayashi, Kanagawa, JP;
Toshihiro Yoshida, Odawara, JP;
Yokuo Saitoh, Kanagawa, JP;
Yoshikazu Tsuji, Kanagawa, JP;
Masaaki Hayashi, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A thin film magnetic head has magnetic films, at least one of which is composed of a material containing major components of nickel and iron and one or more element from nitrogen, oxygen and carbon and has two of face-centered cubic system and body-centered tetragonal system, whereby thin film magnetic heads having a high permeability and low coercive force can be provided.