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. 24, 1998
Filed:
Dec. 20, 1995
Showa Denko Kabushiki Kaisha, Tokyo, JP;
Abstract
A magnetic recording medium comprised of (i) a non-magnetic substrate such as glass or carbon, (ii) a silicon layer preferably having a thickness of about 20-3,000 angstroms, formed on the substrate, (iii) a layer composed of at least one element of the platinum group of the periodic table or its alloy or carbon, formed on the silicon layer, wherein the platinum group element or alloy is at least partially silicified with silicon diffusing from the adjacent silicon layer, and the carbon is rendered at least partially amorphous with silicon diffusing from the adjacent silicon layer, (iv) an undercoat composed of chromium or its alloy, formed on the layer of a platinum group element or alloy or carbon, (v) a magnetic layer composed of a cobalt alloy, formed on the undercoat, (vi) a protective carbon overcoat formed on the magnetic layer, and (vii) an optional lubricating layer formed on the protective overcoat.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile