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:
Mar. 05, 1991
Filed:
Sep. 07, 1989
Applicant:
Inventors:
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
427129 ; 2041922 ; 427132 ; 427251 ; 427314 ;
Abstract
Magnetic recording media for perpendicular recording are produced by coating a non-magnetic substrate by a PVD method with a cobalt-containing, ferromagnetic metal layer which has magnetic anisotropy perpendicular to the plane of the layer, by a process in which the temperature of the substrate is increased by external heating during coating.