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:
Feb. 10, 1981
Filed:
Jul. 24, 1978
Applicant:
Inventors:
Ryuji Shirahata, Odawara, JP;
Tatsuji Kitamoto, Odawara, JP;
Masaaki Suzuki, Odawara, JP;
Hiroshi Amari, Odawara, JP;
Assignee:
Fuji Photo Film Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
428336 ; 427 40 ; 427128 ; 427129 ; 427132 ; 428220 ; 428339 ; 428458 ; 428461 ; 428463 ; 428464 ;
Abstract
A magnetic recording medium excellent in adhesiveness and surface property is produced by a process comprising treating the surface of a plastic substrate by glow discharge, then subjecting the substrate to a surface activating treatment and forming a magnetic metallic plating layer on the surface of the substrate by an electroless plating method.
Shirahata, Ryuji. (1981). Process for the production of a magnetic recording medium (U.S. Patent No. 4250225). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4250225
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile