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:
Dec. 02, 2003
Filed:
Nov. 09, 2001
Applicant:
Inventors:
Cangshan Xu, Fremont, CA (US);
Brian S. Lombardo, Amherst, NH (US);
Assignee:
Lam Research Corporation, Fremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24D 1/100 ;
U.S. Cl.
CPC ...
B24D 1/100 ;
Abstract
A belt for polishing a workpiece such as a semiconductor wafer in a chemical mechanical polishing system includes a polymeric layer forming an endless loop and having a polishing surface on one side of the endless loop. The belt is manufactured by molding a polymeric material such as urethane in a cylindrical mold. The belt is thus made from a single layer, reducing weight, size, cost and maintenance requirements.