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. 28, 1989
Filed:
Sep. 04, 1987
Applicant:
Inventors:
Gary C Rauch, Colorado Springs, CO (US);
Young David J, Mesa, AZ (US);
Earl R Johns, Colorado Springs, CO (US);
Robert L Stone, Monument, CO (US);
Carolyn A Messinger, Colorado Springs, CO (US);
Assignee:
Digital Equipment Corp., Maynard, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204 29 ; 204 383 ; 204 384 ; 204 447 ; 427129 ; 427131 ; 427132 ; 427438 ;
Abstract
This invention comprises the use, during the plating processing of thin-film magnetic recording media, of an oxidizing treatment immediately preceding the electroplating of the magnetic layer. This oxidizing treatment can be controlled to produce desired high levels of coercive force and low levels of media noise.