DE69810117T2 - Polieren von halbleiterscheiben - Google Patents

Polieren von halbleiterscheiben

Info

Publication number
DE69810117T2
DE69810117T2 DE69810117T DE69810117T DE69810117T2 DE 69810117 T2 DE69810117 T2 DE 69810117T2 DE 69810117 T DE69810117 T DE 69810117T DE 69810117 T DE69810117 T DE 69810117T DE 69810117 T2 DE69810117 T2 DE 69810117T2
Authority
DE
Germany
Prior art keywords
polishing semiconductor
semiconductor discs
discs
polishing
semiconductor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69810117T
Other languages
English (en)
Other versions
DE69810117D1 (de
Inventor
Walter Dudovicz
Brian Lombardo
Alfred A Conklin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Praxair Surface Technologies Inc
Original Assignee
Peripheral Products Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peripheral Products Inc filed Critical Peripheral Products Inc
Publication of DE69810117D1 publication Critical patent/DE69810117D1/de
Application granted granted Critical
Publication of DE69810117T2 publication Critical patent/DE69810117T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/302Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
    • H01L21/304Mechanical treatment, e.g. grinding, polishing, cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00Lapping machines or devices; Accessories
    • B24B37/11Lapping tools
    • B24B37/20Lapping pads for working plane surfaces
    • B24B37/205Lapping pads for working plane surfaces provided with a window for inspecting the surface of the work being lapped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00Lapping machines or devices; Accessories
    • B24B37/11Lapping tools
    • B24B37/20Lapping pads for working plane surfaces
    • B24B37/26Lapping pads for working plane surfaces characterised by the shape of the lapping pad surface, e.g. grooved
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/06Connecting the ends of materials, e.g. for making abrasive belts
DE69810117T 1997-07-30 1998-07-21 Polieren von halbleiterscheiben Expired - Fee Related DE69810117T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US90300497A 1997-07-30 1997-07-30
US08/941,386 US6736714B2 (en) 1997-07-30 1997-09-30 Polishing silicon wafers
PCT/GB1998/002174 WO1999006182A1 (en) 1997-07-30 1998-07-21 Polishing semiconductor wafers

Publications (2)

Publication Number Publication Date
DE69810117D1 DE69810117D1 (de) 2003-01-23
DE69810117T2 true DE69810117T2 (de) 2003-11-13

Family

ID=27129340

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69810117T Expired - Fee Related DE69810117T2 (de) 1997-07-30 1998-07-21 Polieren von halbleiterscheiben

Country Status (8)

Country Link
US (3) US6736714B2 (de)
EP (1) EP0999918B1 (de)
JP (1) JP2001512057A (de)
KR (1) KR100646490B1 (de)
AU (1) AU8453298A (de)
DE (1) DE69810117T2 (de)
TW (1) TW365561B (de)
WO (1) WO1999006182A1 (de)

Families Citing this family (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6108091A (en) 1997-05-28 2000-08-22 Lam Research Corporation Method and apparatus for in-situ monitoring of thickness during chemical-mechanical polishing
US6736714B2 (en) * 1997-07-30 2004-05-18 Praxair S.T. Technology, Inc. Polishing silicon wafers
US6210257B1 (en) * 1998-05-29 2001-04-03 Micron Technology, Inc. Web-format polishing pads and methods for manufacturing and using web-format polishing pads in mechanical and chemical-mechanical planarization of microelectronic substrates
US6585574B1 (en) 1998-06-02 2003-07-01 Brian Lombardo Polishing pad with reduced moisture absorption
US6749714B1 (en) 1999-03-30 2004-06-15 Nikon Corporation Polishing body, polisher, polishing method, and method for producing semiconductor device
US6261168B1 (en) 1999-05-21 2001-07-17 Lam Research Corporation Chemical mechanical planarization or polishing pad with sections having varied groove patterns
US6869343B2 (en) * 2001-12-19 2005-03-22 Toho Engineering Kabushiki Kaisha Turning tool for grooving polishing pad, apparatus and method of producing polishing pad using the tool, and polishing pad produced by using the tool
US7516536B2 (en) * 1999-07-08 2009-04-14 Toho Engineering Kabushiki Kaisha Method of producing polishing pad
WO2001011843A1 (en) * 1999-08-06 2001-02-15 Sudia Frank W Blocked tree authorization and status systems
US6406363B1 (en) 1999-08-31 2002-06-18 Lam Research Corporation Unsupported chemical mechanical polishing belt
US20020090819A1 (en) * 1999-08-31 2002-07-11 Cangshan Xu Windowless belt and method for improved in-situ wafer monitoring
EP1268130A1 (de) * 2000-03-31 2003-01-02 Lam Research Lineares polierband mit fixiertem schleifmittel und vorrichtung mit einem solchen band
US6402591B1 (en) 2000-03-31 2002-06-11 Lam Research Corporation Planarization system for chemical-mechanical polishing
JP2002009025A (ja) * 2000-06-21 2002-01-11 Toray Ind Inc 研磨パッド
US6495464B1 (en) 2000-06-30 2002-12-17 Lam Research Corporation Method and apparatus for fixed abrasive substrate preparation and use in a cluster CMP tool
DE20013377U1 (de) * 2000-08-01 2000-10-05 Joest Peter Schleifband für eine Bandschleifmaschine
US6575821B2 (en) 2000-08-01 2003-06-10 Joest Peter Abrasive belt for a belt grinding machine
EP1177858A1 (de) * 2000-08-02 2002-02-06 Applied Materials, Inc. Bandpoliergerät mit fixiertem Schleifmittel
US6561889B1 (en) * 2000-12-27 2003-05-13 Lam Research Corporation Methods for making reinforced wafer polishing pads and apparatuses implementing the same
US20040243175A1 (en) * 2001-03-12 2004-12-02 Don Michael T. Anthony Vascular obstruction removal system and method
US6620031B2 (en) 2001-04-04 2003-09-16 Lam Research Corporation Method for optimizing the planarizing length of a polishing pad
US6837779B2 (en) 2001-05-07 2005-01-04 Applied Materials, Inc. Chemical mechanical polisher with grooved belt
EP1277546A1 (de) * 2001-07-20 2003-01-22 sia Abrasives Industries AG Schleifband mit einem Träger aus Vulkanfiber
JP2003103455A (ja) * 2001-09-28 2003-04-08 Shin Etsu Handotai Co Ltd ワーク保持盤並びにワークの研磨装置及び研磨方法
EP1483182A4 (de) * 2002-03-12 2007-04-25 Lam Res Corp Verstärkter riemen für chemisch-mechanisches-planarisieren
KR20030092787A (ko) * 2002-05-31 2003-12-06 장명식 다공성 연마 패드를 구비하는 연마 장치 및 이를 이용한연마방법
US7087187B2 (en) * 2002-06-06 2006-08-08 Grumbine Steven K Meta oxide coated carbon black for CMP
JP4362443B2 (ja) * 2002-06-07 2009-11-11 プラックセアー エス.ティ.テクノロジー、 インコーポレイテッド 侵入調節サブパッド
US7163444B2 (en) * 2003-01-10 2007-01-16 3M Innovative Properties Company Pad constructions for chemical mechanical planarization applications
US6908366B2 (en) * 2003-01-10 2005-06-21 3M Innovative Properties Company Method of using a soft subpad for chemical mechanical polishing
US6832947B2 (en) * 2003-02-10 2004-12-21 Cabot Microelectronics Corporation CMP pad with composite transparent window
EP1561545A1 (de) * 2004-02-09 2005-08-10 sia Abrasives Industries AG Schleifband
EP1561543A1 (de) * 2004-02-09 2005-08-10 sia Abrasives Industries AG Schleifband
EP1561544A1 (de) * 2004-02-09 2005-08-10 sia Abrasives Industries AG Schleifband
AT501742B1 (de) * 2005-03-21 2006-11-15 Meulen Alfred V D Schleifscheibe
JP4524643B2 (ja) * 2005-05-18 2010-08-18 株式会社Sumco ウェーハ研磨方法
TW200720001A (en) * 2005-08-10 2007-06-01 Rohm & Haas Elect Mat Method of forming grooves in a chemical mechanical polishing pad utilizing laser ablation
TW200720023A (en) * 2005-09-19 2007-06-01 Rohm & Haas Elect Mat A method of forming a stacked polishing pad using laser ablation
US7813105B2 (en) * 2006-06-06 2010-10-12 Adc Tech International Ltd. Multi-layer capacitor
DE102006048747B3 (de) * 2006-10-12 2008-02-21 Gkd - Gebr. Kufferath Ag Prozessband zum Transportieren eines Guts durch einen Prozessraum, insbesondere zum Formieren eines Vlieses
KR101464800B1 (ko) * 2007-08-13 2014-11-24 쓰리엠 이노베이티브 프로퍼티즈 컴파니 코팅된 연마 라미네이트 디스크 및 그의 제조 방법
US8226737B2 (en) 2008-07-03 2012-07-24 3M Innovative Properties Company Fixed abrasive particles and articles made therefrom
DE102008048175A1 (de) * 2008-09-20 2010-04-08 Phoenix Conveyor Belt Systems Gmbh Fördergurt zum Transport von Heißgut
JP5323447B2 (ja) * 2008-10-29 2013-10-23 大和化成工業株式会社 研磨砥石
CN102918189B (zh) 2010-05-13 2015-07-22 奥的斯电梯公司 制造在抗拉构件之间具有希望的间隔的织造织物的方法
KR101246240B1 (ko) * 2011-08-11 2013-03-21 엠.씨.케이 (주) 평판형 디스플레이의 유리기판 세정용 무한궤도 벨트형 연마지
US8808065B2 (en) * 2012-06-21 2014-08-19 Design Technologies Llc Surface treating device
KR101342063B1 (ko) 2012-11-20 2013-12-18 최재현 벨트형 연마패드
US10144175B2 (en) * 2014-03-18 2018-12-04 Evolve Additive Solutions, Inc. Electrophotography-based additive manufacturing with solvent-assisted planarization
CA2925923A1 (en) * 2014-05-01 2015-11-05 3M Innovative Properties Company Flexible abrasive article and method of using the same
US10875153B2 (en) 2014-10-17 2020-12-29 Applied Materials, Inc. Advanced polishing pad materials and formulations
US11745302B2 (en) 2014-10-17 2023-09-05 Applied Materials, Inc. Methods and precursor formulations for forming advanced polishing pads by use of an additive manufacturing process
SG10202002601QA (en) 2014-10-17 2020-05-28 Applied Materials Inc Cmp pad construction with composite material properties using additive manufacturing processes
TWI769988B (zh) * 2015-10-07 2022-07-11 美商3M新設資產公司 拋光墊與系統及其製造與使用方法
US10593574B2 (en) * 2015-11-06 2020-03-17 Applied Materials, Inc. Techniques for combining CMP process tracking data with 3D printed CMP consumables
US10391605B2 (en) 2016-01-19 2019-08-27 Applied Materials, Inc. Method and apparatus for forming porous advanced polishing pads using an additive manufacturing process
TWI713526B (zh) * 2016-05-20 2020-12-21 智勝科技股份有限公司 基底層、具有基底層的研磨墊及研磨方法
KR102318482B1 (ko) * 2017-03-24 2021-10-29 주식회사 케이씨텍 연마 패드 및 이를 구비하는 기판 연마 장치, 연마 패드의 제조 방법
US11471999B2 (en) 2017-07-26 2022-10-18 Applied Materials, Inc. Integrated abrasive polishing pads and manufacturing methods
WO2019032286A1 (en) 2017-08-07 2019-02-14 Applied Materials, Inc. ABRASIVE DISTRIBUTION POLISHING PADS AND METHODS OF MAKING SAME
WO2020050932A1 (en) 2018-09-04 2020-03-12 Applied Materials, Inc. Formulations for advanced polishing pads
KR102438398B1 (ko) * 2021-01-15 2022-08-31 주식회사 엘에이티 웨이퍼를 이송하기 위한 컨베이어 모듈 및 이를 포함하는 웨이퍼 이송 시스템
US11878389B2 (en) 2021-02-10 2024-01-23 Applied Materials, Inc. Structures formed using an additive manufacturing process for regenerating surface texture in situ
WO2023069557A1 (en) * 2021-10-23 2023-04-27 Rajeev Bajaj Post cmp brush and method of manufacture

Family Cites Families (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US27817A (en) * 1860-04-10 Improvement in substitutes for emery-cloth
US81986A (en) * 1868-09-08 John h
US4109543A (en) * 1976-05-10 1978-08-29 The Goodyear Tire & Rubber Company Flexible composite laminate of woven fabric and thermoplastic material and method of making said laminate
US4437269A (en) * 1979-08-17 1984-03-20 S.I.A.C.O. Limited Abrasive and polishing sheets
US4282011A (en) * 1980-05-30 1981-08-04 Dan River Incorporated Woven fabrics containing glass fibers and abrasive belts made from same
US4396657A (en) * 1981-12-28 1983-08-02 Norton Company Fray and stretch resistant coated abrasive substrates impregnated with epoxy resins cured by specific types of catalysts
US4478610A (en) * 1982-08-27 1984-10-23 Carborundum Abrasives Company Method of preparing flexible backing material for use in coated abrasives
US4520059A (en) * 1983-12-16 1985-05-28 Engineered Yarns, Inc. Ionomer-coated yarns and their use in papermakers wet press felts
US4576612A (en) 1984-06-01 1986-03-18 Ferro Corporation Fixed ophthalmic lens polishing pad
US4728552A (en) 1984-07-06 1988-03-01 Rodel, Inc. Substrate containing fibers of predetermined orientation and process of making the same
DE3528363A1 (de) * 1985-08-07 1987-02-19 Wangner Gmbh Co Kg Hermann Papiermaschinenbespannung in form eines mit vliesstoff bedeckten spiralgliederbandes
US4927432A (en) 1986-03-25 1990-05-22 Rodel, Inc. Pad material for grinding, lapping and polishing
US4753838A (en) 1986-06-16 1988-06-28 Tsuguji Kimura Polishing sheet material and method for its production
DE3638036A1 (de) * 1986-11-07 1988-05-11 Siteg Siebtech Gmbh Spiralgliederband mit geteilten spiralen
JPS63267155A (ja) 1987-04-24 1988-11-04 Babcock Hitachi Kk 研磨装置
US4841680A (en) 1987-08-25 1989-06-27 Rodel, Inc. Inverted cell pad material for grinding, lapping, shaping and polishing
JPH01193166A (ja) 1988-01-28 1989-08-03 Showa Denko Kk 半導体ウェハ鏡面研磨用パッド
US4962562A (en) 1989-01-18 1990-10-16 Minnesota Mining And Manufacturing Company Compounding, glazing or polishing pad
DE8900626U1 (de) * 1989-01-21 1989-03-09 Parabeam B.V., Helmond, Nl
JP2525892B2 (ja) * 1989-04-06 1996-08-21 ロデール・ニッタ 株式会社 ポリッシング方法およびポリッシング装置
US5234867A (en) 1992-05-27 1993-08-10 Micron Technology, Inc. Method for planarizing semiconductor wafers with a non-circular polishing pad
US5177908A (en) 1990-01-22 1993-01-12 Micron Technology, Inc. Polishing pad
US5020283A (en) 1990-01-22 1991-06-04 Micron Technology, Inc. Polishing pad with uniform abrasion
US5257478A (en) 1990-03-22 1993-11-02 Rodel, Inc. Apparatus for interlayer planarization of semiconductor material
CA2036247A1 (en) 1990-03-29 1991-09-30 Jeffrey L. Berger Nonwoven surface finishing articles reinforced with a polymer backing layer and method of making same
JP3256226B2 (ja) * 1990-10-09 2002-02-12 ミネソタ・マイニング・アンド・マニュファクチュアリング・カンパニー 浸蝕性凝集体を有する被覆研磨材料
US5212910A (en) 1991-07-09 1993-05-25 Intel Corporation Composite polishing pad for semiconductor process
US5197999A (en) 1991-09-30 1993-03-30 National Semiconductor Corporation Polishing pad for planarization
US5316812A (en) * 1991-12-20 1994-05-31 Minnesota Mining And Manufacturing Company Coated abrasive backing
CA2116686A1 (en) * 1991-12-20 1993-07-08 Harold Wayne Benedict A coated abrasive belt with an endless, seamless backing and method of preparation
US6406577B1 (en) * 1991-12-20 2002-06-18 3M Innovative Properties Company Method of making abrasive belt with an endless, seamless backing
US6406576B1 (en) * 1991-12-20 2002-06-18 3M Innovative Properties Company Method of making coated abrasive belt with an endless, seamless backing
US5287663A (en) 1992-01-21 1994-02-22 National Semiconductor Corporation Polishing pad and method for polishing semiconductor wafers
MY114512A (en) 1992-08-19 2002-11-30 Rodel Inc Polymeric substrate with polymeric microelements
US5487697A (en) 1993-02-09 1996-01-30 Rodel, Inc. Polishing apparatus and method using a rotary work holder travelling down a rail for polishing a workpiece with linear pads
US5329734A (en) 1993-04-30 1994-07-19 Motorola, Inc. Polishing pads used to chemical-mechanical polish a semiconductor substrate
US5681612A (en) * 1993-06-17 1997-10-28 Minnesota Mining And Manufacturing Company Coated abrasives and methods of preparation
DE4403501A1 (de) * 1994-02-04 1995-08-10 Siteg Siebtech Gmbh Spiralgliederband niedriger Luftdurchlässigkeit und Verfahren zu seiner Herstellung
AU1735295A (en) * 1994-02-22 1995-09-04 Minnesota Mining And Manufacturing Company Method for making an endless coated abrasive article and the product thereof
US5489233A (en) 1994-04-08 1996-02-06 Rodel, Inc. Polishing pads and methods for their use
JPH0811050A (ja) * 1994-06-28 1996-01-16 Sony Corp 研磨布及びこれを用いた半導体装置の製造方法
US5534106A (en) 1994-07-26 1996-07-09 Kabushiki Kaisha Toshiba Apparatus for processing semiconductor wafers
ATE186001T1 (de) 1994-08-09 1999-11-15 Ontrak Systems Inc Linear poliergerät und wafer planarisierungsverfahren
US5593344A (en) 1994-10-11 1997-01-14 Ontrak Systems, Inc. Wafer polishing machine with fluid bearings and drive systems
US5575707A (en) 1994-10-11 1996-11-19 Ontrak Systems, Inc. Polishing pad cluster for polishing a semiconductor wafer
EP0792515A1 (de) 1994-11-18 1997-09-03 Advanced Micro Devices, Inc. Verfahren zum herstellen einer chemisch-mechanischen polieraufschlämmung und die polieraufschlämmung
JP3331790B2 (ja) * 1994-11-30 2002-10-07 ソニー株式会社 化学的機械研磨装置及び化学的機械研磨法
US5573844A (en) * 1995-01-06 1996-11-12 Minnesota Mining And Manufacturing Company Conformable surface finishing article and method for manufacture of same
KR100189970B1 (ko) * 1995-08-07 1999-06-01 윤종용 웨이퍼 연마장치
US5605760A (en) 1995-08-21 1997-02-25 Rodel, Inc. Polishing pads
JP2830907B2 (ja) * 1995-12-06 1998-12-02 日本電気株式会社 半導体基板研磨装置
JP2738392B1 (ja) * 1996-11-05 1998-04-08 日本電気株式会社 半導体装置の研磨装置及び研磨方法
US6328642B1 (en) 1997-02-14 2001-12-11 Lam Research Corporation Integrated pad and belt for chemical mechanical polishing
US6736714B2 (en) * 1997-07-30 2004-05-18 Praxair S.T. Technology, Inc. Polishing silicon wafers

Also Published As

Publication number Publication date
DE69810117D1 (de) 2003-01-23
JP2001512057A (ja) 2001-08-21
AU8453298A (en) 1999-02-22
WO1999006182A1 (en) 1999-02-11
US20010034197A1 (en) 2001-10-25
US20030087594A1 (en) 2003-05-08
EP0999918B1 (de) 2002-12-11
US6736714B2 (en) 2004-05-18
KR20010022464A (ko) 2001-03-15
KR100646490B1 (ko) 2006-11-14
TW365561B (en) 1999-08-01
EP0999918A1 (de) 2000-05-17
US6971950B2 (en) 2005-12-06
US20040087262A1 (en) 2004-05-06

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