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:
Feb. 15, 2005
Filed:
Dec. 05, 2003
Bruce Jairson, Los Altos, CA (US);
Ching Jackie Tsoi, Milpitas, CA (US);
Wen Liu, San Jose, CA (US);
Shigeto Hashimoto, Yamagata, JP;
Eric Woo Hock Yong, Penang, ML;
Tsutomu Tom Yamashita, San Jose, CA (US);
Bruce Jairson, Los Altos, CA (US);
Ching Jackie Tsoi, Milpitas, CA (US);
Wen Liu, San Jose, CA (US);
Shigeto Hashimoto, Yamagata, JP;
Eric Woo Hock Yong, Penang, ML;
Tsutomu Tom Yamashita, San Jose, CA (US);
Komag, Inc., San Jose, CA (US);
Abstract
A method for making a magnetic disk comprises forming first and second protective carbon layers on a magnetic layer. The first protective carbon layer is predominantly SP3 carbon. The second protective carbon layer comprises about 50% or less SP3 carbon. The second protective carbon layer is very thin, e.g. between 0.1 and 1.0 nm thick. A lubricant layer (e.g. a perfluoropolyether lubricant) is applied to the second protective carbon layer. The second protective carbon layer facilitates improved cooperation between lubricant and the disk.