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, 1992
Filed:
Mar. 16, 1990
Applicant:
Inventors:
Horst Platz, Willstaett, DE;
Peter Engelhardt, Plankstadt, DE;
Friedrich Sommermann, Kehl, DE;
Albert Kohl, Laumersheim, DE;
Juergen Klausmann, Offenburg, DE;
Reinhold Baur, Ortenberg, DE;
Peter Heilmann, Bad Duerkheim, DE;
Hermann Roller, Ludwigshafen, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; B02C / ;
U.S. Cl.
CPC ...
427128 ; 428402 ; 428694 ; 428900 ; 252 6254 ;
Abstract
Magnetic recording media are produced by dispersion of powdered magnetic material in a mixture of solvents, organic polymer binders, dispersants and further conventional additives in a stirred ball mill and subsequent aftertreatment in a ball mill containing grinding media, application of the resulting dispersion as a layer to a substrate and subsequent consolidation of the layer.