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:
Oct. 24, 2000
Filed:
Jul. 24, 1998
Applicant:
Inventors:
Chanapatna Krishnamorthy Prabhakara, Tracy, CA (US);
Amrik Singh Lehil, San Jose, CA (US);
Stella Zofia Gornicki, Livermore, CA (US);
Keith Samuel Goodson, San Jose, CA (US);
Wing Tsang Tang, Milpitas, CA (US);
Assignee:
Western Digital Corporation, Irvine, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
428 653 ; 4286 / ; 428 655 ; 428 657 ; 428408 ;
Abstract
A recording medium on a hard disk is provided that includes a magnetic data recording layer on the disk, a hydrogenated carbon buffer layer over the data recording layer, and a nitrogenated carbon overcoat layer over the hydrogenated carbon buffer layer. The composition ratios and thickness of the recording and nitrogenated carbon overcoat layers are suitably controlled to optimum ranges.