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. 09, 1997
Filed:
Apr. 19, 1996
Applicant:
Inventor:
Inki Kim, Tempe, AZ (US);
Assignee:
Speedfam Corporation, Des Plaines, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
451288 ; 451 41 ; 451285 ; 451286 ; 451397 ; 451398 ;
Abstract
A retainer ring for retaining a thin workpiece during machining thereof, the retaining ring being of a design which facilitates distribution of an abrasive slurry used in the machining operation.