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. 01, 1989
Filed:
Sep. 08, 1987
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428408 ; 252 6254 ; 427128 ; 428694 ; 428695 ; 428900 ;
Abstract
An improved magnetic dispersion for magnetic recording which comprises magnetic pigment, abrasive, carbon black or another additive for regulating conductivity, binder, solvent, lubricant, and wetting agent, wherein the improvement comprises quantities of wetting agent, lubricant, or both being between at least 100 to 140% of the individually determined saturation adsorptions of the wetting agent and lubricant, with the proviso that the minimum quantity of wetting agent or lubricant is 80% of the individually determined saturation adsorption.