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:
Sep. 07, 2010
Filed:
May. 31, 2007
Applicants:
Yuji Horie, Tokyo, JP;
Hiromitsu Okuyama, Tokyo, JP;
Tatsuya Tanifuji, Tokyo, JP;
Inventors:
Assignee:
NIHON Micro Coating Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B44C 1/22 (2006.01); C03C 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of texturing a surface of a magnetic hard disk substrate includes the steps of rotating the magnetic hard disk substrate, supplying polishing slurry on the surface of the substrate, and pressing a polishing tape on the substrate surface and running the polishing tape. The polishing slurry includes abrading particles of monocrystalline diamond that are cluster particles with corners having diameters in the range of 1-10 nm, dispersed in a dispersant such as water and a water-based aqueous solution. The cluster particles are tasseled assemblies of crystalline particles with no directionality.