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. 02, 1983
Filed:
Jan. 02, 1980
Applicant:
Inventors:
Fujio Shibata, Tokyo, JP;
Kiyotaka Okuyama, Tokyo, JP;
Assignee:
TDK Electronics Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428 64 ; 252 6253 ; 252 6254 ; 360134 ; 360135 ; 427128 ; 428413 ; 4284259 ; 428694 ;
Abstract
A magnetic recording tape or disc which has excellent physical characteristics of adhesive strength, a repeated running durability, and a gloss degree of the surface as well as excellent electromagnetic characteristics. A binder of a magnetic paint coating comprises 30 to 70 wt. % of an urethane resin, 10 to 50 wt. % of an epoxy resin and 10 to 50 wt. % of nitrocellulose, and if necessary a curing agent.