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Class Information
Number: 451/385
Name: Abrading > Work holder > Clamp > Work rotating
Description: Work holder having means to permit the workpiece to turn more than 360° while it is in contact with the abrading surface.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8579678 Grinding method for workpiece having a plurality of bumps Nov. 12, 2013
8535121 Retaining ring and articles for carrier head Sep. 17, 2013
8444456 Electrode securing platens and electrode polishing assemblies incorporating the same May. 21, 2013
8414360 Double side polishing apparatus and carrier therefor Apr. 9, 2013
8403732 Inclination angle adjusting device and workpiece attaching device Mar. 26, 2013
8403731 Inclination angle adjusting device and workpiece attaching device Mar. 26, 2013
8328601 Apparatus for grinding heated plane of cooler Dec. 11, 2012
8172646 Magnetically actuated chuck for edge bevel removal May. 8, 2012
7959139 Noncontact rotating processor Jun. 14, 2011
7913374 Processing method for brake rotor-equipped wheel bearing devices Mar. 29, 2011
7897007 Substrate holding apparatus and substrate polishing apparatus Mar. 1, 2011
7811154 Grinding apparatus Oct. 12, 2010
7255631 Orbital polishing apparatus and method Aug. 14, 2007
7255637 Carrier head vibration damping Aug. 14, 2007
7137874 Semiconductor wafer, polishing apparatus and method Nov. 21, 2006
7134950 Center clamp Nov. 14, 2006
7014545 Vibration damping in a chemical mechanical polishing system Mar. 21, 2006
6733369 Method and apparatus for polishing or lapping an aspherical surface of a work piece May. 11, 2004
6726547 Cutting device for sheet metal drum Apr. 27, 2004
6676497 Vibration damping in a chemical mechanical polishing system Jan. 13, 2004
6656029 Semiconductor device incorporating hemispherical solid immersion lens, apparatus and method for manufacturing the same Dec. 2, 2003
6589103 Device for the finishing treatment of shaft workpieces Jul. 8, 2003
6524174 Clamp for connecting/disconnecting a rotary head to/from a spindle in apparatus for manufacturing a semiconductor device Feb. 25, 2003
6497765 Multi piece swivel chuck for holding conical shaped work Dec. 24, 2002
6431954 Method and apparatus for grinding workpieces with precision work performed at the same time as the grinding Aug. 13, 2002
6409585 Polishing apparatus and holder for holding an article to be polished Jun. 25, 2002
6322422 Apparatus for accurately measuring local thickness of insulating layer on semiconductor wafer during polishing and polishing system using the same Nov. 27, 2001
6206772 Disc grinder Mar. 27, 2001
6203401 Device for superfinishing treated surfaces Mar. 20, 2001
6145849 Disk processing chuck Nov. 14, 2000
6099387 CMP of a circlet wafer using disc-like brake polish pads Aug. 8, 2000
6083092 Multi-piece lathe chuck for silicon ingots Jul. 4, 2000
6062961 Wafer polishing head drive May. 16, 2000
6017266 Dynamic compensating machine tool chuck Jan. 25, 2000
6012976 Multi-piece lathe chuck for silicon ingots Jan. 11, 2000
5797605 Workholding apparatus Aug. 25, 1998
5791976 Surface machining method and apparatus Aug. 11, 1998
5616070 Work drive orienting system for machine tool Apr. 1, 1997
5609148 Method and apparatus for dicing semiconductor wafers Mar. 11, 1997
5571044 Wafer holder for semiconductor wafer polishing machine Nov. 5, 1996
5525092 Device for preventing idle rotation in cylindrical ingot grinder Jun. 11, 1996
5462475 Blocking system for prescription lenses Oct. 31, 1995
5341605 Dual mode floor sander Aug. 30, 1994
5184432 Tool for sharpening tungsten electrodes Feb. 9, 1993
5095786 Method and apparatus for dampening brake lathe vibration Mar. 17, 1992
5081797 Integrated buffing and grinding system Jan. 21, 1992
5031303 Methods and device for accurately positioning a roller segment for the purpose of finishing its pivoting bearing surface, and a method for machining the seats of device of this kind Jul. 16, 1991
5025595 Method and device for finishing a concave spherical bearing surface on a roller segment, particularly for a homokinetic joint Jun. 25, 1991
5005320 Method and apparatus for tapering an end of an elongated object Apr. 9, 1991
5001868 Apparatus for grinding a point on a tungsten electrode Mar. 26, 1991

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