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:
Aug. 05, 2003
Filed:
Jul. 14, 2000
Applicant:
Inventors:
Yoshinori Fujie, Kanagawa, JP;
Sumihisa Yamaguchi, Kanagawa, JP;
Assignee:
Seimi Chemical Co., Ltd., Chigasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
B24B 1/00 ;
U.S. Cl.
CPC ...
B24B 1/00 ;
Abstract
An abrasive for planarization of glass substrates for hard discs comprising abrasive grains mainly composed of rare earth oxides containing cerium oxide, wherein the abrasive grains has a cerium oxide/total rare earth oxide ratio of 95 wt %.