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. 15, 2000
Filed:
Apr. 23, 1998
Applicant:
Inventors:
Richard D Weir, Agoura Hills, CA (US);
Carl W Nelson, Santa Cruz, CA (US);
Assignee:
Tulip Memory Systems, Inc., Fremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ; B32B / ; G11B / ;
U.S. Cl.
CPC ...
428336 ; 428610 ; 428611 ; 4286 / ; 4286 / ; 4286 / ; 428698 ; 428651 ; 427523 ; 360131 ; 2041921 ;
Abstract
A coated metal-substrate disk for magnetic-recording applications is disclosed having a first coating selected from the group consisting of nitrides, carbides, or borides of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, or tungsten, or the group consisting of aluminum nitride, silicon nitride, or silicon carbide on the metal substrate and a magnetic-recording material coating on the first coating. The first coatings are applied by evaporative reactive ion plating or by reactive sputtering.