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. 04, 1986
Filed:
Nov. 19, 1984
Applicant:
Inventors:
August Lehner, Roedersheim-Gronau, DE;
Werner Balz, Limburgerhof, DE;
Milan Velic, Ludwigshafen, DE;
Helmut Kopke, Weisenheim, DE;
Werner Grau, Bobenheim-Roxheim, DE;
Reinhold Baur, Offenburg, DE;
Assignee:
BASF Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
4284259 ; 252 6254 ; 427128 ; 428413 ; 428522 ; 428524 ; 428532 ; 428694 ; 428900 ; 360134 ; 360135 ; 360136 ;
Abstract
Magnetic recording media comprise a non-magnetic base which is provided with a magnetic layer consisting of finely divided anisotropic magnetic material which is dispersible in binders and additives, the binder being a mixture of (1) an OH-containing polyurethane which is crosslinked with polyisocyanates, (2) a high molecular weight thermoplastic linear polyurethane and (3) a polyvinylformal binder, a phenoxy resin, a cellulose ester or a vinyl chloride copolymer.