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. 30, 2002
Filed:
Nov. 10, 1998
Applicant:
Inventor:
Yoshiaki Komuro, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24B 2/900 ;
U.S. Cl.
CPC ...
B24B 2/900 ;
Abstract
A polishing apparatus for polishing a subject surface of a thin-plate-like object that is held by a rotary polishing head with a polishing pad that is mounted on the surface of a rotary polishing surface table. The polishing head has sucking structures such as suction grooves and a through-hole. An elastic holding film that is formed with a plurality of through-holes are attached to the object holding surface of the polishing head. The object is polished in a state that it is sucked and held by the polishing head via the holding film by vacuum suction force.