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:
Mar. 03, 1987
Filed:
Oct. 19, 1983
Applicant:
Inventor:
Keiji Mori, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
29603 ; 2041922 ; 20419222 ;
Abstract
A main magnetic pole of a magnetic head for perpendicular magnetization is made in a sputtering apparatus by continuously moving a shielding plate closely to a substrate in a space between the substrate and a target electrode standing face to face with each other, whereby the thickness of a soft-magnetic metal film formed on the substrate by sputtering is continuously changed.
Mori, Keiji. (1987). Method of making magnetic head (U.S. Patent No. 4646429). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4646429
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile