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. 12, 1991
Filed:
Oct. 31, 1988
Applicant:
Inventors:
August Lehner, Roedersheim-Gronau, DE;
Albert Kohl, Laumersheim, DE;
Hermann Roller, Ludwigshafen, DE;
Werner Lenz, Bad Duerkheim, DE;
Ludwig Kreitner, Heppenheim, DE;
Helmut Kopke, Weisenheim, DE;
Friedrich Sommermann, Kehl, DE;
Ernst Ricker, Bretzfeld-Geddelsbach, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
4284259 ; 428694 ; 428900 ;
Abstract
Magnetic recording media consist of a nonmagnetic base and at least one matnetizable layer which is firmly applied thereon and is based on a magnetic material finely dispersed in a binder, consisting of not less than 50% by weight of a polyurethane, and further conventional additives, wherein the magnetizable layer also contains a saturated, branched hydrocarbon.