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:
Aug. 04, 1987
Filed:
Jul. 29, 1982
Applicant:
Inventors:
Masanobu Hanazono, Hitachi, JP;
Shinichi Hara, Hitachi, JP;
Hirosi Akiyama, Hitachi, JP;
Masaaki Hayashi, Odawara, JP;
Harunobu Saitoo, Odawara, JP;
Takumi Kurisu, Hamada, JP;
Assignee:
Computer Basic Technology Association, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360126 ; 29603 ; 156643 ; 156668 ;
Abstract
In producing a magnetic head by thin film technique, a magnetic film is formed on an insulating member covering coil conductor films after the surface of the insulating member is flattened. After a flattening coating is formed on the insulating member, the flattening coating as well as the insulating member are etched by plasma-assisted etching technique in order to flatten the surface.