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Class Information
Number: 451/290
Name: Abrading > Machine > Rotary tool > Rotary disk > Work rotating > Rotary work holder > Disk or wheel abrader
Description: Abrading machine especially adapted for abrading a rotary platelike member or rolling element.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8662961 Polishing pad seasoning method, seasoning plate, and semiconductor polishing device Mar. 4, 2014
8597084 Textured platen Dec. 3, 2013
8579679 Conditioning method and conditioning apparatus for polishing pad for use in double side polishing device Nov. 12, 2013
8545290 Wafer polishing apparatus and method Oct. 1, 2013
8535120 Blade sharpening system for agricultural implements Sep. 17, 2013
8469776 Flexible membrane for carrier head Jun. 25, 2013
8464420 Structure for installing split-style diamond grinding disk Jun. 18, 2013
8414361 Silicon carbide, sapphire, germanium, silicon and pattern wafer polishing templates holder Apr. 9, 2013
8366516 Partial-area polishing device for optical disc Feb. 5, 2013
8337280 High speed platen abrading wire-driven rotary workholder Dec. 25, 2012
8246424 Polishing disc for a tool for the fine machining of optically active surfaces particularly on spectacle lenses and method for its production Aug. 21, 2012
8152597 Wafer grinding method and wafer grinding machine Apr. 10, 2012
8092281 Polishing head and polishing apparatus Jan. 10, 2012
8079894 Chemical mechanical polishing system having multiple polishing stations and providing relative linear polishing motion Dec. 20, 2011
8066552 Multi-layer polishing pad for low-pressure polishing Nov. 29, 2011
8062098 High speed flat lapping platen Nov. 22, 2011
8047897 Substrate flat grinding device Nov. 1, 2011
8029341 Polishing tool comprising a drive plate and a removable pad for finishing an ophthalmic lens Oct. 4, 2011
8021215 Carrier head with retaining ring and carrier ring Sep. 20, 2011
7959496 Flexible membrane assembly for a CMP system and method of using Jun. 14, 2011
7950985 Flexible membrane for carrier head May. 31, 2011
7887392 Platen assembly and work piece carrier head employing flexible circuit sensor Feb. 15, 2011
7887391 Apparatus for polishing media discs Feb. 15, 2011
7883397 Substrate retainer Feb. 8, 2011
7727055 Flexible membrane for carrier head Jun. 1, 2010
7674154 Apparatus and method for polishing objects using object cleaners Mar. 9, 2010
7666068 Retainer ring Feb. 23, 2010
7654885 Multi-layer polishing pad Feb. 2, 2010
7654888 Carrier head with retaining ring and carrier ring Feb. 2, 2010
7625263 Optical disk restoration apparatus Dec. 1, 2009
7614939 Chemical mechanical polishing system having multiple polishing stations and providing relative linear polishing motion Nov. 10, 2009
7544115 Chemical mechanical polishing assembly with altered polishing pad topographical components Jun. 9, 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
7524237 Diamond tool blade with circular cutting edge Apr. 28, 2009
7503837 Composite retaining ring Mar. 17, 2009
7497767 Vibration damping during chemical mechanical polishing Mar. 3, 2009
7422510 Lens machining machine Sep. 9, 2008
7390242 Diamond tool blade with circular cutting edge Jun. 24, 2008
7364497 Polish pad and chemical mechanical polishing apparatus comprising the same Apr. 29, 2008
7335091 Methods and apparatus for machining a coupling Feb. 26, 2008
7278908 Polishing disk for a tool for the fine machining of optically active surfaces on spectacle lenses in particular Oct. 9, 2007
7238090 Polishing apparatus having a trough Jul. 3, 2007
7207862 Polishing apparatus and method for detecting foreign matter on polishing surface Apr. 24, 2007
7186171 Composite retaining ring Mar. 6, 2007
7166019 Flexible membrane for a polishing head and chemical mechanical polishing (CMP) apparatus having the same Jan. 23, 2007
7118465 Grinding assembly of semiconductor wafer back-grinding apparatus and method of fastening a grinding plate to a grinding mount of the same Oct. 10, 2006
7115026 Polishing apparatus Oct. 3, 2006
7104871 Method and apparatus for reconditioning compact discs Sep. 12, 2006
7101272 Carrier head for thermal drift compensation Sep. 5, 2006
7101259 Polishing method and apparatus Sep. 5, 2006

1 2 3 4

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