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:
Jul. 31, 2012
Filed:
Feb. 19, 2008
Applicants:
Kazuyuki Haneda, Ichihara, JP;
Satoshi Fujinami, Minamitsuru-gun, JP;
Inventors:
Kazuyuki Haneda, Ichihara, JP;
Satoshi Fujinami, Minamitsuru-gun, JP;
Assignee:
Showa Denko K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B 9/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
The polishing method of a disk-shaped substrate for polishing an outer circumferenceof a disk-shaped substrate using slurry is provided with in this sequence: a first polishing process for polishing the outer circumferenceusing an abrasive-grain inclusion brushmade of a resin in which polishing abrasive grains are included; and a second polishing process for polishing the outer circumferenceusing a resin brushmade of a resin in which the polishing abrasive grains are not included.