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:
May. 29, 1984
Filed:
Aug. 30, 1982
Andrew M Homola, Morgan Hill, CA (US);
Max R Lorenz, San Jose, CA (US);
Heinrich Sussner, Monte Sereno, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A monolayer magnetic coating is prepared by applying magnetic particles which have an electrostatic charge in an aqueous environment to an active layer on a substrate, the active layer having an electrostatic charge in an aqueous environment opposite to the charge on the magnetic particles so that the particles bond to the active layer. The concentration of the electrolyte in which the charged particles are dispersed is adjusted to reduce the coulombic repulsive forces between the particles, permitting them to move close together and thereby increasing the magnetic particle packing in the resultant magnetic coating.