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. 01, 1983
Filed:
Dec. 05, 1980
Applicant:
Inventors:
Toshiaki Izumi, Tokyo, JP;
Seitoku Saito, Tokyo, JP;
Fumio Maruta, Tokyo, JP;
Minoru Kameya, Tokyo, JP;
Assignee:
TDK Electronics Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; H01F / ;
U.S. Cl.
CPC ...
428555 ; 360134 ; 360135 ; 427131 ; 427132 ; 428551 ; 428611 ; 428928 ;
Abstract
A magnetic recording medium having multi-layer structure of two or more thin metallic layers on a substrate. The orientations of metallic particles are different for each of said thin metallic layers.