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:
May. 04, 1999
Filed:
May. 17, 1996
Applicant:
Inventors:
Hitoshi Hirano, Nishinomiya, JP;
Keiichi Kuramoto, Kadoma, JP;
Yoichi Domoto, Hirakata, JP;
Seiichi Kiyama, Takatsuki, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360122 ; 360126 ;
Abstract
A thin-film magnetic head includes an upper protective layer, a lower protective layer, and a head forming layer which is provided between the upper and lower protective layers, and the head forming layer further includes a recording head forming layer, a reproducing head forming layer, and a separation layer which is provided between the recording and reproducing head forming layers, while any one of the upper protective layer, the lower protective layer and the separation layer is formed by a diamond-like carbon coating.