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:
May. 20, 2008
Filed:
Nov. 27, 2006
Noriyuki Kumasaka, Tokyo, JP;
Yuji Horie, Tokyo, JP;
Mitsuru Saito, Tokyo, JP;
Kazuei Yamaguchi, Tokyo, JP;
Noriyuki Kumasaka, Tokyo, JP;
Yuji Horie, Tokyo, JP;
Mitsuru Saito, Tokyo, JP;
Kazuei Yamaguchi, Tokyo, JP;
NIHON Micro Coating Co., Ltd., Tokyo, JP;
Abstract
Texturing slurry for texturing a substrate for a magnetic hard disk is obtained by dispersing abrading particles of a specified kind in a specified kind of dispersant. The abrading particles include diamond clusters formed with artificial diamond particles with primary particle diameter of 20 nm or less and surrounded by impurities containing chlorine at a certain ratio. The cluster diameter and the average cluster diameter of the diamond clusters are each within a specified range. For texturing a substrate surface, the substrate is rotated, texturing slurry of this invention is supplied to the surface and a texturing tape of a specified kind is pressed against the substrate surface while it is caused to run.