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. 05, 2019
Filed:
Feb. 16, 2016
Showa Denko K.k., Tokyo, JP;
Yoshihiko Maruyama, Jurong, SG;
Selvaraj Aanandha, Jurong, SG;
Yuan Ai Khoo, Jurong, SG;
Satoru Nakamura, Hsinchu, TW;
Hiromitsu Tanuma, Higashine, JP;
Eishin Yamakawa, Ichihara, JP;
SHOWA DENKO K.K., Tokyo, JP;
Abstract
A magnetic recording medium which is capable of effectively preventing a surface thereof from being contaminated, and is capable of preventing a contaminant thereon from adhering (being transferred) to a magnetic head, and a magnetic recording and reproducing apparatus including the magnetic recording medium are provided, A carbon protective layer of the magnetic recording medium is nitrided, and as a lubricant a compound A expressed by the following General Formula (1) and a compound B expressed by the following General Formula (2) are mixed and used.R—CHOCHCH(OH)CHOCH—R—CHOCHCH(OH)CHOH  (1)CH(OH)CH(OH)CHOCHCFCF(OCFCFCF)OCFCFCHOCHCH(OH)CHOH  (2)