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. 05, 2009
Filed:
Jul. 09, 2004
Applicants:
Kazunari Nishihara, Sakai, JP;
Tsunemoto Kuriyagawa, Sendai, JP;
Inventors:
Kazunari Nishihara, Sakai, JP;
Tsunemoto Kuriyagawa, Sendai, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B 1/00 (2006.01); B24D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A viscoelastic polisher to be used for polishing. The viscoelastic polisher includes a viscoelastic layer provided on a major surface of a base disk and having a hole of a predetermined radius formed in a center portion thereof, and the base disk has a plurality of grooves equiangularly provided in the major surface thereof as extending radially outward from a center portion thereof. This arrangement ensures stable supply of an abrasive liquid, and obviates a need for formation of grooves in the viscoelastic layer.