| Patents for B24B 37 - Lapping machines or devices; Accessories (20,836) |
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| 03/25/1992 | CN1015969B Method and device for crystal chip angle measuring and lapping |
| 03/19/1992 | DE4029346A1 Machine for lapping faces of disks - has carrier plates with gear teeth offset and half plate thickness so that plates can be overlapped |
| 03/18/1992 | EP0474768A1 Ultra-precision lapping apparatus |
| 03/17/1992 | US5096854 Method for polishing a silicon wafer using a ceramic polishing surface having a maximum surface roughness less than 0.02 microns |
| 03/17/1992 | US5095661 Apparatus for transporting wafer to and from polishing head |
| 02/19/1992 | EP0471389A2 Aluminum oxide/aluminum oxynitride/group IVB metal nitride abrasive particles derived from a sol-gel process |
| 02/04/1992 | US5085009 Carrier for supporting workpiece to be polished |
| 01/28/1992 | US5083401 Method of polishing |
| 01/22/1992 | CN2093718U Lapping device |
| 01/21/1992 | US5081796 Method and apparatus for mechanical planarization and endpoint detection of a semiconductor wafer |
| 01/21/1992 | US5081795 Polishing apparatus |
| 01/15/1992 | EP0465868A2 Controlled compliance polishing pad |
| 01/14/1992 | US5081421 In situ monitoring technique and apparatus for chemical/mechanical planarization endpoint detection |
| 01/14/1992 | US5081051 Semiconductors, cutting grooves with serrated blade |
| 01/08/1992 | EP0464864A2 Apparatus for transporting a wafer |
| 12/31/1991 | US5077464 Method and apparatus for endpoint detection in a semiconductor wafer etching system |
| 12/31/1991 | US5076026 Microscopic grinding method and microscopic grinding device |
| 12/31/1991 | US5076024 Disk polisher assembly |
| 12/25/1991 | CN2091202U Hard ring and bracelets grinding device |
| 12/18/1991 | EP0364514B1 Device for a twin-disk lapping machine |
| 12/18/1991 | EP0304472A4 Biased grinding assembly |
| 12/11/1991 | EP0460384A1 End point detector for polishing operations |
| 12/03/1991 | US5069002 Apparatus for endpoint detection during mechanical planarization of semiconductor wafers |
| 11/19/1991 | US5065550 Lapping of involute spiral scroll element |
| 11/13/1991 | CN1056162A In situ monitoring technique and apparatus for chemical/mechanical planarization endpoint detection |
| 11/06/1991 | EP0455455A2 In situ monitoring technique and apparatus for chemical/mechanical planarization endpoint detection |
| 10/30/1991 | EP0454362A2 Backing pad and method of forming the backing pad by precision surface machining |
| 10/29/1991 | US5060424 Surface grinding apparatus |
| 10/23/1991 | EP0452501A1 Electro-abrasive Polishing Process of the Inner Surface of Pipes to Extra-smooth Mirror Finish |
| 10/17/1991 | DE4011993A1 Single-sided polished semiconductor disc mfg. system - uses upper and lower polishing surfaces for polishing opposing pairs of discs |
| 10/16/1991 | EP0451471A2 Method and apparatus for polishing a semiconductor wafer |
| 10/15/1991 | US5057152 Surface cleaner/polish compositions and a process for the preparation thereof |
| 10/08/1991 | US5054244 Polishing apparatus |
| 10/03/1991 | WO1991014538A1 Apparatus for interlayer planarization of semiconductor material |
| 09/17/1991 | US5048238 Non-contact machining of spherical surface |
| 08/28/1991 | EP0443285A1 Lapping machine, and lapping plate therefor with variable groove pitch |
| 08/22/1991 | WO1991012113A1 System for controlling the force applied to a workpiece by a tool element |
| 08/20/1991 | US5041173 Cast iron with increased concentration of fine graphite spheres |
| 08/20/1991 | US5040336 Non-contact polishing |
| 08/14/1991 | EP0441640A2 Sintered aluminous abrasive grains and method of producing the same |
| 08/10/1991 | CA2036051A1 Sintered aluminous abrasive and method of producing same |
| 08/06/1991 | US5036630 Radial uniformity control of semiconductor wafer polishing |
| 08/06/1991 | US5036625 Lapping plate for a lapping and polishing machine |
| 07/31/1991 | EP0439124A2 Polishing pad with uniform abrasion |
| 07/30/1991 | US5036015 Method of endpoint detection during chemical/mechanical planarization of semiconductor wafers |
| 07/10/1991 | EP0436315A2 Injection moldable plastic laps |
| 07/03/1991 | EP0435815A1 Lapping of involute spiral scroll element |
| 07/02/1991 | US5028242 Lapping member and lapping tape |
| 06/27/1991 | WO1991008863A1 Methods of preparation of surfaces and applications thereof |
| 06/26/1991 | EP0316451A4 Device for abrasive machining |
| 06/18/1991 | US5023991 Electrical guide for tight tolerance machining |
| 06/12/1991 | EP0431553A2 Microscopic grinding method and microscopic grinding device |
| 06/11/1991 | US5022191 Polishing plate |
| 06/06/1991 | DE3939362A1 Lapping machine for hard, brittle components - has opposed eccentrically running lapping rings with separate electrically controlled and synchronised drives |
| 06/04/1991 | US5020283 Polishing pad with uniform abrasion |
| 05/21/1991 | US5016399 Planetary lap |
| 05/02/1991 | WO1991006388A1 Method of super-mirror finishing with electrolytic grinding for internal surface of small-diameter tube |
| 04/23/1991 | US5010491 Automated system for machining parts to close tolerances |
| 04/17/1991 | EP0383910A4 Method and cassette for abrasive machining of the surface of parts |
| 04/17/1991 | EP0308519A4 Machine tool for abrasive machining of flat surfaces |
| 04/02/1991 | US5003728 Machine for abrasive treatment |
| 03/27/1991 | CN2073790U Micrometer grinder |
| 03/06/1991 | CN2072462U Plate abrading machine |
| 03/05/1991 | US4998021 Method of detecting an end point of surface treatment |
| 03/05/1991 | US4996798 Ultra-precision lapping apparatus |
| 02/13/1991 | EP0412537A2 Process and device for the treatment of chemico-mechanical publishing fabrics, particularly for semiconductor wafers |
| 02/07/1991 | DE4022009A1 Grinding and polishing small spherical lenses - involves working lens surface against abrasive layer flowing over conical mouth of rapidly rotating tube |
| 02/07/1991 | DE3925274A1 Supply and dispensing mechanism for lapping mixt. |
| 02/06/1991 | EP0411643A2 Method of grinding a plate-like material and apparatus for carrying out the method |
| 02/06/1991 | EP0411413A2 Method and composition for polishing metal surfaces |
| 02/06/1991 | EP0411346A2 Precision grinding machine for lapping, precision grinding or polishing |
| 02/06/1991 | EP0411345A2 Feeding and dosing equipment for the lapping mixture in polishing machines for lapping, grinding or polishing |
| 01/23/1991 | EP0185767B1 Film for machining wafers |
| 01/10/1991 | DE3921509A1 Plane lapping machine with automatic loading and unloading - has workpiece carrier ring set eccentric to lapping wheel to provide load and unload sectors |
| 01/01/1991 | US4980995 Method of faceting gemstones |
| 12/26/1990 | CN2068037U Hand air valve finishing unit |
| 12/26/1990 | CN1047998A Integral method and device for angle calibration and grinding of crystal plate |
| 12/19/1990 | EP0403287A2 Method of polishing semiconductor wafer |
| 12/19/1990 | EP0402520A2 Automatic wafer adhering device |
| 12/18/1990 | US4977707 Device for external magnetic abrasive machining of cylindrical components |
| 12/13/1990 | WO1990014926A1 Ultra-precision lapping apparatus |
| 12/04/1990 | US4974370 Lapping and polishing machine |
| 11/30/1990 | CA2017659A1 Ultra precision lapping apparatus |
| 11/28/1990 | EP0399088A2 Lapping machine |
| 11/20/1990 | CA1276469C Textured lapping plate and process for its manufacture |
| 10/24/1990 | EP0394213A1 Ceramic sintered bodies |
| 10/24/1990 | EP0393615A1 Polishing apparatus |
| 10/16/1990 | US4962616 Method and device for controlling the operation of honing machines |
| 10/02/1990 | US4960485 Automatic wafer mounting device |
| 09/26/1990 | EP0388972A2 Apparatus for grinding semiconductor wafer |
| 09/25/1990 | US4959113 Method and composition for polishing metal surfaces |
| 09/25/1990 | US4958464 Lapping machine |
| 09/20/1990 | DE4006307A1 Water sol. scouring powder - contg. powder or fine particles of water sol. inorganic cpd. |
| 09/19/1990 | EP0387988A1 Buffing composition |
| 09/04/1990 | US4954142 Abrasive, transition metal chelated salt, solvent |
| 09/04/1990 | US4954141 Corrosion resistant fluoropolymer |
| 09/04/1990 | US4953982 Method and apparatus for endpoint detection in a semiconductor wafer etching system |
| 08/29/1990 | EP0383910A1 Method and cassette for abrasive machining of the surface of parts |
| 08/22/1990 | EP0383738A1 Lapping control system for magnetic transducers |
| 07/31/1990 | US4944119 Apparatus for transporting wafer to and from polishing head |