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Class Information
Number: 451/269
Name: Abrading > Machine > Rotary tool > Rotary disk > Opposed abrading tools > Work rotating > Rotary work holder
Description: Abrading machine in which the workpiece is mounted in or on a member which turns about an axis during abrading of the workpiece.










Patents under this class:
1 2 3

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
8512099 Method for the simultaneous double-sided material removal processing of a plurality of semiconductor wafers Aug. 20, 2013
8485864 Double-side polishing apparatus and method for polishing both sides of wafer Jul. 16, 2013
8480458 Grinding wheel dressing system Jul. 9, 2013
8414360 Double side polishing apparatus and carrier therefor Apr. 9, 2013
8388410 RFID-containing carriers used for silicon wafer quality Mar. 5, 2013
8337280 High speed platen abrading wire-driven rotary workholder Dec. 25, 2012
8323074 Brake disk braking surface processing device Dec. 4, 2012
8221198 Polishing apparatus for polishing a work having two surfaces Jul. 17, 2012
8145342 Methods and systems for adjusting operation of a wafer grinder using feedback from warp data Mar. 27, 2012
8137157 Lapping carrier and method Mar. 20, 2012
7930058 Nanotopography control and optimization using feedback from warp data Apr. 19, 2011
7901269 Grinding apparatus for a pin for use in power transmission chain and manufacture method of a pin for use in power transmission chain Mar. 8, 2011
7867059 Semiconductor wafer, apparatus and process for producing the semiconductor wafer Jan. 11, 2011
7815489 Method for the simultaneous double-side grinding of a plurality of semiconductor wafers Oct. 19, 2010
7662023 Double side wafer grinder and methods for assessing workpiece nanotopology Feb. 16, 2010
7607969 Grinding apparatus for a pin for use in power transmission chain and manufacture method of a pin for use in power transmission chain Oct. 27, 2009
7601049 Double side wafer grinder and methods for assessing workpiece nanotopology Oct. 13, 2009
7541287 Method for machining a semiconductor wafer on both sides in a carrier, carrier, and a semiconductor wafer produced by the method Jun. 2, 2009
7481698 Sintered rare earth magnetic alloy wafer surface grinding machine Jan. 27, 2009
7435158 Initial position setting method of grinding wheel in vertical double disc surface grinding machine Oct. 14, 2008
7399217 Lapping machine Jul. 15, 2008
7364495 Wafer double-side polishing apparatus and double-side polishing method Apr. 29, 2008
7347770 Two-sided surface grinding apparatus Mar. 25, 2008
7255635 Polishing apparatus Aug. 14, 2007
7207870 Seal assembly manufacturing methods and seal assemblies manufactured thereby Apr. 24, 2007
7147541 Thickness control method and double side polisher Dec. 12, 2006
7137867 Thickness control method and double side polisher Nov. 21, 2006
7077726 Semiconductor wafer with improved local flatness, and method for its production Jul. 18, 2006
7008308 Wafer carrier Mar. 7, 2006
7008310 Wafer carrier wear indicator Mar. 7, 2006
7004816 Grinding method for vertical type of double disk surface grinding machine Feb. 28, 2006
7001244 Polishing apparatus Feb. 21, 2006
6932685 Vertical type of double disc surface grinding machine for a brake disc Aug. 23, 2005
6896598 Vertical type of double disc surface grinding machine May. 24, 2005
6887127 Polishing apparatus May. 3, 2005
6852012 Cluster tool systems and methods for in fab wafer processing Feb. 8, 2005
6846228 Structure for a polishing machine of an optical disk Jan. 25, 2005
6830505 Polishing machine Dec. 14, 2004
6787055 Carrier heads, planarizing machines and methods for mechanical or chemical-mechanical planarization of microelectronic-device substrate assemblies Sep. 7, 2004
6752687 Method of polishing disks Jun. 22, 2004
6726525 Method and device for grinding double sides of thin disk work Apr. 27, 2004
6669535 Platform table for cleaning parts Dec. 30, 2003
6514121 Polishing chemical delivery for small head chemical mechanical planarization Feb. 4, 2003
6478665 Multi-wafer polishing tool Nov. 12, 2002
6454635 Method and apparatus for a wafer carrier having an insert Sep. 24, 2002
6419564 Grinding device and method Jul. 16, 2002
6419555 Process and apparatus for polishing a workpiece Jul. 16, 2002
6309280 Method of grinding semiconductor articles Oct. 30, 2001
6280291 Wafer sensor utilizing hydrodynamic pressure differential Aug. 28, 2001

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