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Class Information
Number: 451/268
Name: Abrading > Machine > Rotary tool > Rotary disk > Opposed abrading tools > Work rotating
Description: Abrading machine in which the workpiece is turned about an axis while being abraded.










Sub-classes under this class:

Class Number Class Name Patents
451/269 Rotary work holder 131


Patents under this class:
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Patent Number Title Of Patent Date Issued
8613643 Work feeder for roller end face working machine, roller end face working machine and rollers for roller bearing Dec. 24, 2013
8486220 Method of assembly of retaining ring for CMP Jul. 16, 2013
8470125 Multilayer retaining ring for chemical mechanical polishing Jun. 25, 2013
8454410 Polishing apparatus Jun. 4, 2013
8267741 Glass substrate manufacturing method, glass substrate polishing method, glass substrate polishing apparatus and glass substrate Sep. 18, 2012
8221190 Polishing apparatus cofigured to simultaneously polish two surfaces of a work Jul. 17, 2012
8197300 Simultaneous double-side grinding of semiconductor wafers Jun. 12, 2012
8177605 Bowling ball surface treatment device May. 15, 2012
8145342 Methods and systems for adjusting operation of a wafer grinder using feedback from warp data Mar. 27, 2012
8113913 Method for the simultaneous grinding of a plurality of semiconductor wafers Feb. 14, 2012
8113919 Bowling ball surface treatment apparatus Feb. 14, 2012
8029339 Workpiece double-disc grinding apparatus and workpiece double-disc grinding method Oct. 4, 2011
8002610 Double side polishing method and apparatus Aug. 23, 2011
7862403 Surface grinder for ball of ball valve Jan. 4, 2011
7648409 Double side polishing method and apparatus Jan. 19, 2010
7500905 Grinding apparatus and grinding system Mar. 10, 2009
7491115 Indexing device for performing operational tasks on a tool element Feb. 17, 2009
7485029 Double face polishing apparatus Feb. 3, 2009
7367867 Two-side working machine May. 6, 2008
7364495 Wafer double-side polishing apparatus and double-side polishing method Apr. 29, 2008
7347770 Two-sided surface grinding apparatus Mar. 25, 2008
7150674 Both-side grinding method and both-side grinding machine for thin disc work Dec. 19, 2006
7131900 Grinding wheel in combination with a grinding ring Nov. 7, 2006
7101258 Double sided polishing machine Sep. 5, 2006
7077726 Semiconductor wafer with improved local flatness, and method for its production Jul. 18, 2006
7029380 Double-side polishing method and apparatus Apr. 18, 2006
7014540 Device for the precision working of planar surfaces Mar. 21, 2006
6984167 Polishing agent and lapping method Jan. 10, 2006
6896598 Vertical type of double disc surface grinding machine May. 24, 2005
6846228 Structure for a polishing machine of an optical disk Jan. 25, 2005
6767428 Method and apparatus for chemical mechanical planarization Jul. 27, 2004
6761622 Bowling ball resurfacing device Jul. 13, 2004
6733368 Method for lapping a wafer May. 11, 2004
6726525 Method and device for grinding double sides of thin disk work Apr. 27, 2004
6402600 Bowling ball surface abrading and polishing tool assembly Jun. 11, 2002
6309280 Method of grinding semiconductor articles Oct. 30, 2001
6299514 Double-disk polishing machine, particularly for tooling semiconductor wafers Oct. 9, 2001
6273783 Concentric machining device and method Aug. 14, 2001
6261161 Sharpener assembly for a food slicer and related method Jul. 17, 2001
6250997 Processing machine Jun. 26, 2001
6217433 Grinding device and method Apr. 17, 2001
6210259 Method and apparatus for lapping of workpieces Apr. 3, 2001
6196901 Method of double-side lapping a wafer and an apparatus therefor Mar. 6, 2001
6186875 Bowling ball surfacing machine Feb. 13, 2001
6176767 Double face abrading machine Jan. 23, 2001
6152804 Grinding method and grinding apparatus Nov. 28, 2000
6142859 Polishing apparatus Nov. 7, 2000
6139405 Method of making a motor-vehicle brake-disk assembly Oct. 31, 2000
6099387 CMP of a circlet wafer using disc-like brake polish pads Aug. 8, 2000
6074275 Polishing system and method of control of same Jun. 13, 2000

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