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Class Information
Number: 451/397
Name: Abrading > Work holder > Work rotating
Description: Work holder in which the work is guided in rotation during grinding.










Sub-classes under this class:

Class Number Class Name Patents
451/398 Rotary work holder 514


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8608531 Arrow preparation system Dec. 17, 2013
8562390 Double-disc grinding apparatus and method for producing wafer Oct. 22, 2013
8479372 Ring engraving fixture Jul. 9, 2013
8360820 Robotic manipulator Jan. 29, 2013
8231429 Slow speed spindle for micropunch grinding Jul. 31, 2012
8172646 Magnetically actuated chuck for edge bevel removal May. 8, 2012
8100738 Grinding machine and method for grinding work pieces between centers and for centerless grinding in which the work piece can be supported between a grinding wheel, and a regulating wheel eithe Jan. 24, 2012
8021210 Polishing head and polishing apparatus having the same Sep. 20, 2011
7946325 Device and method for blocking optical lens May. 24, 2011
7789738 Sheet for mounting polishing workpiece and method for making the same Sep. 7, 2010
7731572 CMP head Jun. 8, 2010
7666069 Wafer holder and wafer conveyor equipped with the same Feb. 23, 2010
7628676 Machine tool for machining workpieces Dec. 8, 2009
7591714 Wafer grinding and tape attaching apparatus and method Sep. 22, 2009
7419420 Substrate holding mechanism, substrate polishing apparatus and substrate polishing method Sep. 2, 2008
7347767 Retaining rings, and associated planarizing apparatuses, and related methods for planarizing micro-device workpieces Mar. 25, 2008
7303466 Carrier head of chemical mechanical polishing apparatus having barriers dividing pressure chamber into a plurality of pressure zones Dec. 4, 2007
7258594 Method and device for centerless cylindrical grinding Aug. 21, 2007
7220173 Wafer holder and wafer conveyor system equipped with the same May. 22, 2007
7189153 Retaining rings, planarizing apparatuses including retaining rings, and methods for planarizing micro-device workpieces Mar. 13, 2007
7175514 Polishing fixture assembly for a fiber optic cable connector polishing apparatus Feb. 13, 2007
7169022 Method and apparatus for creating a groove in a collector ring of an electrical device Jan. 30, 2007
7150674 Both-side grinding method and both-side grinding machine for thin disc work Dec. 19, 2006
7144308 Apparatus for chemical mechanical polishing Dec. 5, 2006
7140949 Tool and process for chrome plating a vehicle wheel surface Nov. 28, 2006
7121927 Retaining ring structure for edge control during chemical-mechanical polishing Oct. 17, 2006
7108591 Compliant wafer chuck Sep. 19, 2006
7103950 Pipe beveling tool and method Sep. 12, 2006
7101271 Polishing head and chemical mechanical polishing apparatus Sep. 5, 2006
7101261 Fluid-pressure regulated wafer polishing head Sep. 5, 2006
7056196 Wafer polisher Jun. 6, 2006
7040971 Carrier head with a flexible membrane May. 9, 2006
7029375 Retaining ring structure for edge control during chemical-mechanical polishing Apr. 18, 2006
6979256 Retaining ring with wear pad for use in chemical mechanical planarization Dec. 27, 2005
6962520 Retaining rings, planarizing apparatuses including retaining rings, and methods for planarizing micro-device workpieces Nov. 8, 2005
6938313 Portable plastic pipe cutter beveller system Sep. 6, 2005
6913522 Method and device for grinding central bearing positions on crankshafts Jul. 5, 2005
6913521 Methods using active retainer rings for improving edge performance in CMP applications Jul. 5, 2005
6913669 Retaining ring for holding semiconductor wafers in a chemical mechanical polishing apparatus Jul. 5, 2005
6899610 Retaining ring with wear pad for use in chemical mechanical planarization May. 31, 2005
6893330 Tool and process for chrome plating a vehicle wheel surface May. 17, 2005
6893327 Chemical mechanical polishing apparatus and method having a retaining ring with a contoured surface May. 17, 2005
6884154 Method for apparatus for polishing outer peripheral chamfered part of wafer Apr. 26, 2005
6869335 Retaining rings, planarizing apparatuses including retaining rings, and methods for planarizing micro-device workpieces Mar. 22, 2005
6857931 Method of detecting a substrate in a carrier head Feb. 22, 2005
6857950 Polishing apparatus, semiconductor device manufacturing method using the polishing apparatus, and semiconductor device manufactured by the manufacturing method Feb. 22, 2005
6857946 Carrier head with a flexure Feb. 22, 2005
6843707 Methods for aligning a surface of an active retainer ring with a wafer surface for chemical mechanical polishing Jan. 18, 2005
6827638 Polishing device and method Dec. 7, 2004
6824458 Retaining ring for holding semiconductor wafers in a chemical mechanical polishing apparatus Nov. 30, 2004

1 2 3 4










 
 
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