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:
Nov. 30, 1982
Filed:
Jun. 04, 1981
Applicant:
Inventors:
Yukihiro Isobe, Tokyo, JP;
Kiyotaka Okuyama, Tokyo, JP;
Akihiko Hosaka, Tokyo, JP;
Hideo Kobayashi, Tokyo, JP;
Assignee:
TDK Electronics Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428329 ; 427127 ; 427128 ; 428328 ; 428341 ; 428403 ; 428413 ; 4284259 ; 428480 ; 428522 ; 428532 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium comprises a substrate coated with a magnetic layer formed by using a magnetic composition comprising a binder and a magnetic powder adsorbing ricinoleic acid or an ester thereof.