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. 30, 1990
Filed:
Jun. 23, 1989
Applicant:
Inventors:
Tsuneo Nakamura, Nara, JP;
Kazuyoshi Imae, Higashiosaka, JP;
Haruhiko Deguchi, Tenri, JP;
Tohru Kira, Tenri, JP;
Assignee:
Sharp Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44C / ; B29C / ; C03C / ; C03C / ;
U.S. Cl.
CPC ...
156643 ; 29603 ; 156646 ; 156651 ; 156655 ; 156668 ; 20419236 ; 427131 ;
Abstract
An improved process for producing a thin film magnetic head includes forming a nonmagnetic material layer over a lower magnetic core layer with an electrically conductive coil layer embedded in the nonmagnetic material layer. It further includes forming an upper magnetic core layer of a predetermined pattern by a specific method over the resultant to provide the thin film magnetic head.