DE3850624D1 - Verfahren zum Herstellen von Halbleiterkontakten. - Google Patents

Verfahren zum Herstellen von Halbleiterkontakten.

Info

Publication number
DE3850624D1
DE3850624D1 DE3850624T DE3850624T DE3850624D1 DE 3850624 D1 DE3850624 D1 DE 3850624D1 DE 3850624 T DE3850624 T DE 3850624T DE 3850624 T DE3850624 T DE 3850624T DE 3850624 D1 DE3850624 D1 DE 3850624D1
Authority
DE
Germany
Prior art keywords
making semiconductor
semiconductor contacts
contacts
making
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
DE3850624T
Other languages
English (en)
Other versions
DE3850624T2 (de
Inventor
E Henry Stevens
Paul John Mcclure
Christopher Warren Hill
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.)
Thorn EMI North America Inc
Original Assignee
Thorn EMI North America 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 Thorn EMI North America Inc filed Critical Thorn EMI North America Inc
Publication of DE3850624D1 publication Critical patent/DE3850624D1/de
Application granted granted Critical
Publication of DE3850624T2 publication Critical patent/DE3850624T2/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 potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/28Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
    • H01L21/283Deposition of conductive or insulating materials for electrodes conducting electric current
    • H01L21/285Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
    • H01L21/28506Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
    • H01L21/28512Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
    • H01L21/28518Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table the conductive layers comprising silicides
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00Metal treatment
    • Y10S148/112Nitridation, direct, of silicon
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00Metal treatment
    • Y10S148/118Oxide films
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00Metal treatment
    • Y10S148/147Silicides
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S257/00Active solid-state devices, e.g. transistors, solid-state diodes
    • Y10S257/915Active solid-state devices, e.g. transistors, solid-state diodes with titanium nitride portion or region

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Electrodes Of Semiconductors (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
DE3850624T 1987-08-24 1988-08-23 Verfahren zum Herstellen von Halbleiterkontakten. Expired - Fee Related DE3850624T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/088,681 US4784973A (en) 1987-08-24 1987-08-24 Semiconductor contact silicide/nitride process with control for silicide thickness

Publications (2)

Publication Number Publication Date
DE3850624D1 true DE3850624D1 (de) 1994-08-18
DE3850624T2 DE3850624T2 (de) 1994-12-22

Family

ID=22212799

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3850624T Expired - Fee Related DE3850624T2 (de) 1987-08-24 1988-08-23 Verfahren zum Herstellen von Halbleiterkontakten.

Country Status (4)

Country Link
US (1) US4784973A (de)
EP (1) EP0305147B1 (de)
JP (1) JP2598479B2 (de)
DE (1) DE3850624T2 (de)

Families Citing this family (89)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4931411A (en) * 1985-05-01 1990-06-05 Texas Instruments Incorporated Integrated circuit process with TiN-gate transistor
US4962414A (en) * 1988-02-11 1990-10-09 Sgs-Thomson Microelectronics, Inc. Method for forming a contact VIA
US4793896C1 (en) * 1988-02-22 2001-10-23 Texas Instruments Inc Method for forming local interconnects using chlorine bearing agents
US4957590A (en) * 1988-02-22 1990-09-18 Texas Instruments Incorporated Method for forming local interconnects using selective anisotropy
US4994410A (en) * 1988-04-04 1991-02-19 Motorola, Inc. Method for device metallization by forming a contact plug and interconnect using a silicide/nitride process
JP2776826B2 (ja) * 1988-04-15 1998-07-16 株式会社日立製作所 半導体装置およびその製造方法
US4998157A (en) * 1988-08-06 1991-03-05 Seiko Epson Corporation Ohmic contact to silicon substrate
US5874766A (en) * 1988-12-20 1999-02-23 Matsushita Electric Industrial Co., Ltd. Semiconductor device having an oxynitride film
KR930004295B1 (ko) * 1988-12-24 1993-05-22 삼성전자 주식회사 Vlsi 장치의 n+ 및 p+ 저항영역에 저저항 접속방법
US5070036A (en) * 1989-01-04 1991-12-03 Quality Microcircuits Corporation Process for contacting and interconnecting semiconductor devices within an integrated circuit
US4977440A (en) * 1989-01-04 1990-12-11 Stevens E Henry Structure and process for contacting and interconnecting semiconductor devices within an integrated circuit
US5162262A (en) * 1989-03-14 1992-11-10 Mitsubishi Denki Kabushiki Kaisha Multi-layered interconnection structure for a semiconductor device and manufactured method thereof
US5229311A (en) * 1989-03-22 1993-07-20 Intel Corporation Method of reducing hot-electron degradation in semiconductor devices
JP3011941B2 (ja) 1989-03-31 2000-02-21 ソニー株式会社 半導体装置の製造方法
JPH02262371A (ja) * 1989-04-03 1990-10-25 Toshiba Corp 半導体装置及びその製造方法
US5102827A (en) * 1989-05-31 1992-04-07 At&T Bell Laboratories Contact metallization of semiconductor integrated-circuit devices
GB8913540D0 (en) * 1989-06-13 1989-08-02 Inmos Ltd Fabricating electrical contacts in semiconductor devices
US5194405A (en) * 1989-07-06 1993-03-16 Sony Corporation Method of manufacturing a semiconductor device having a silicide layer
JP2910064B2 (ja) * 1989-07-06 1999-06-23 ソニー株式会社 半導体装置の製造方法
US5230878A (en) * 1989-10-02 1993-07-27 Tokai Carbon Co., Ltd. Carbon black for tire tread rubber
DE4035991C2 (de) * 1989-11-14 1994-06-23 Mitsubishi Electric Corp Kontaktstruktur für die Verdrahtung in Halbleitereinrichtungen und Herstellungsverfahren hierfür
US5170242A (en) * 1989-12-04 1992-12-08 Ramtron Corporation Reaction barrier for a multilayer structure in an integrated circuit
US5288666A (en) * 1990-03-21 1994-02-22 Ncr Corporation Process for forming self-aligned titanium silicide by heating in an oxygen rich environment
US5043790A (en) * 1990-04-05 1991-08-27 Ramtron Corporation Sealed self aligned contacts using two nitrides process
US5216281A (en) * 1990-04-05 1993-06-01 Ramtron Corporation Self sealed aligned contact incorporating a dopant source
US5443996A (en) * 1990-05-14 1995-08-22 At&T Global Information Solutions Company Process for forming titanium silicide local interconnect
US5268329A (en) * 1990-05-31 1993-12-07 At&T Bell Laboratories Method of fabricating an integrated circuit interconnection
EP0478233B1 (de) * 1990-09-27 1996-01-03 AT&T Corp. Verfahren zur Herstellung integrierter Schaltungen
GB2252667A (en) * 1990-10-08 1992-08-12 Gold Star Electronics Contact in DRAM device
US5238872A (en) * 1990-12-11 1993-08-24 Samsung Semiconductor, Inc. Barrier metal contact architecture
KR100214036B1 (ko) * 1991-02-19 1999-08-02 이데이 노부유끼 알루미늄계 배선형성방법
JPH04280425A (ja) * 1991-03-07 1992-10-06 Sony Corp 配線形成方法
US5380678A (en) * 1991-03-12 1995-01-10 Yu; Chang Bilayer barrier metal method for obtaining 100% step-coverage in contact vias without junction degradation
US5250467A (en) * 1991-03-29 1993-10-05 Applied Materials, Inc. Method for forming low resistance and low defect density tungsten contacts to silicon semiconductor wafer
US5243222A (en) * 1991-04-05 1993-09-07 International Business Machines Corporation Copper alloy metallurgies for VLSI interconnection structures
US5130274A (en) * 1991-04-05 1992-07-14 International Business Machines Corporation Copper alloy metallurgies for VLSI interconnection structures
EP0517368B1 (de) * 1991-05-03 1998-09-16 STMicroelectronics, Inc. Lokalverbindungen für integrierte Schaltungen
US5188979A (en) * 1991-08-26 1993-02-23 Motorola Inc. Method for forming a nitride layer using preheated ammonia
JPH05243178A (ja) * 1991-10-03 1993-09-21 Hewlett Packard Co <Hp> 半導体集積回路用相互接続体形成方法
US5395798A (en) * 1991-12-19 1995-03-07 Texas Instruments Incorporated Refractory metal silicide deposition process
US5229324A (en) * 1991-12-23 1993-07-20 Texas Instruments Incorporated Method for forming contacts to p-type HgCdTe semiconductor material using lead and tin
US5252518A (en) * 1992-03-03 1993-10-12 Micron Technology, Inc. Method for forming a mixed phase TiN/TiSi film for semiconductor manufacture using metal organometallic precursors and organic silane
US6197686B1 (en) * 1992-03-03 2001-03-06 Sony Corporation Aluminum metallization by a barrier metal process
US5227325A (en) * 1992-04-02 1993-07-13 Micron Technology, Incl Method of forming a capacitor
US5858868A (en) * 1992-05-08 1999-01-12 Yamaha Corporation Method of manufacturing a laminated wiring structure preventing impurity diffusion therein from N+ and P+ regions in CMOS device with ohmic contact
KR970001883B1 (ko) * 1992-12-30 1997-02-18 삼성전자 주식회사 반도체장치 및 그 제조방법
US5378660A (en) * 1993-02-12 1995-01-03 Applied Materials, Inc. Barrier layers and aluminum contacts
US6690044B1 (en) * 1993-03-19 2004-02-10 Micron Technology, Inc. Approach to avoid buckling BPSG by using an intermediate barrier layer
US5322809A (en) * 1993-05-11 1994-06-21 Texas Instruments Incorporated Self-aligned silicide process
US5652180A (en) * 1993-06-28 1997-07-29 Kawasaki Steel Corporation Method of manufacturing semiconductor device with contact structure
JP2596331B2 (ja) * 1993-09-08 1997-04-02 日本電気株式会社 半導体装置およびその製造方法
US5652181A (en) * 1993-11-10 1997-07-29 Micron Display Technology, Inc. Thermal process for forming high value resistors
JP3326267B2 (ja) * 1994-03-01 2002-09-17 三菱電機株式会社 半導体装置およびその製造方法
US5610099A (en) * 1994-06-28 1997-03-11 Ramtron International Corporation Process for fabricating transistors using composite nitride structure
JP2586345B2 (ja) * 1994-10-14 1997-02-26 日本電気株式会社 コバルトシリサイド膜より成る半導体装置及び該装置の製造方法
JPH08191054A (ja) * 1995-01-10 1996-07-23 Kawasaki Steel Corp 半導体装置及びその製造方法
US6001729A (en) * 1995-01-10 1999-12-14 Kawasaki Steel Corporation Method of forming wiring structure for semiconductor device
US5612253A (en) * 1995-01-31 1997-03-18 Advanced Micro Devices, Inc. Method for forming ordered titanium nitride and titanium silicide upon a semiconductor wafer using a three-step anneal process
JP2630296B2 (ja) * 1995-03-08 1997-07-16 日本電気株式会社 半導体装置の製造方法
EP0732731A3 (de) * 1995-03-13 1997-10-08 Applied Materials Inc Behandlung einer Titannitrid-Schicht zur Verbesserung der Beständigkeit gegen höhere Temperaturen
US5545574A (en) * 1995-05-19 1996-08-13 Motorola, Inc. Process for forming a semiconductor device having a metal-semiconductor compound
US5877087A (en) 1995-11-21 1999-03-02 Applied Materials, Inc. Low temperature integrated metallization process and apparatus
US6077781A (en) 1995-11-21 2000-06-20 Applied Materials, Inc. Single step process for blanket-selective CVD aluminum deposition
US6726776B1 (en) 1995-11-21 2004-04-27 Applied Materials, Inc. Low temperature integrated metallization process and apparatus
KR0175030B1 (ko) * 1995-12-07 1999-04-01 김광호 반도체 소자의 고내열 금속 배선 구조 및 그 형성 방법
US6049133A (en) * 1996-06-27 2000-04-11 Advanced Micro Devices, Inc. Semiconductor fabrication employing concurrent diffusion barrier and salicide formation
WO1998012741A1 (en) * 1996-09-18 1998-03-26 Advanced Micro Devices, Inc. Short channel non-self aligned vmos field effect transistor
US6080645A (en) 1996-10-29 2000-06-27 Micron Technology, Inc. Method of making a doped silicon diffusion barrier region
US6139697A (en) * 1997-01-31 2000-10-31 Applied Materials, Inc. Low temperature integrated via and trench fill process and apparatus
US5926730A (en) * 1997-02-19 1999-07-20 Micron Technology, Inc. Conductor layer nitridation
US6262458B1 (en) 1997-02-19 2001-07-17 Micron Technology, Inc. Low resistivity titanium silicide structures
US6015997A (en) * 1997-02-19 2000-01-18 Micron Technology, Inc. Semiconductor structure having a doped conductive layer
US6139905A (en) * 1997-04-11 2000-10-31 Applied Materials, Inc. Integrated CVD/PVD Al planarization using ultra-thin nucleation layers
US6057220A (en) * 1997-09-23 2000-05-02 International Business Machines Corporation Titanium polycide stabilization with a porous barrier
US6605531B1 (en) 1997-11-26 2003-08-12 Applied Materials, Inc. Hole-filling technique using CVD aluminum and PVD aluminum integration
US6048791A (en) * 1998-03-31 2000-04-11 Kabushiki Kaisha Toshiba Semiconductor device with electrode formed of conductive layer consisting of polysilicon layer and metal-silicide layer and its manufacturing method
US6080285A (en) * 1998-09-14 2000-06-27 Applied Materials, Inc. Multiple step ionized metal plasma deposition process for conformal step coverage
US6146983A (en) * 1998-11-17 2000-11-14 Advanced Micro Devices, Inc. Method of making semiconductor device having sacrificial salicidation layer
US6271122B1 (en) * 1999-07-12 2001-08-07 Advanced Micro Devices, Inc. Method of compensating for material loss in a metal silicone layer in contacts of integrated circuit devices
US6337151B1 (en) 1999-08-18 2002-01-08 International Business Machines Corporation Graded composition diffusion barriers for chip wiring applications
US6281543B1 (en) 1999-08-31 2001-08-28 Micron Technology, Inc. Double layer electrode and barrier system on hemispherical grain silicon for use with high dielectric constant materials and methods for fabricating the same
US6265297B1 (en) * 1999-09-01 2001-07-24 Micron Technology, Inc. Ammonia passivation of metal gate electrodes to inhibit oxidation of metal
US6207558B1 (en) 1999-10-21 2001-03-27 Applied Materials, Inc. Barrier applications for aluminum planarization
US6365496B1 (en) * 2000-11-16 2002-04-02 Stmicroelectronics, Inc. Elimination of junction spiking using soft sputter etch and two step tin film during the contact barrier deposition process
US6458714B1 (en) 2000-11-22 2002-10-01 Micron Technology, Inc. Method of selective oxidation in semiconductor manufacture
US6544888B2 (en) * 2001-06-28 2003-04-08 Promos Technologies, Inc. Advanced contact integration scheme for deep-sub-150 nm devices
FR2860780B1 (fr) * 2003-10-13 2006-05-19 Centre Nat Rech Scient Procede de synthese de structures filamentaires nanometriques et composants pour l'electronique comprenant de telles structures
US7164200B2 (en) * 2004-02-27 2007-01-16 Agere Systems Inc. Techniques for reducing bowing in power transistor devices
CN113223951B (zh) * 2020-01-21 2022-12-02 夏泰鑫半导体(青岛)有限公司 半导体处理工艺及半导体元器件

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2040180B2 (de) * 1970-01-22 1977-08-25 Intel Corp, Mountain View, Calif. (V.St.A.) Verfahren zur verhinderung von mechanischen bruechen einer duennen, die oberflaeche eines halbleiterkoerpers ueberdeckende isolierschichten ueberziehenden elektrisch leitenden schicht
US3983264A (en) * 1972-07-20 1976-09-28 Texas Instruments Incorporated Metal-semiconductor ohmic contacts and methods of fabrication
JPS57126147A (en) * 1981-01-28 1982-08-05 Fujitsu Ltd Manufacture of semiconductor device
JPS5994454A (ja) * 1982-11-19 1984-05-31 Nec Kyushu Ltd 半導体装置とその製造方法
US4545116A (en) * 1983-05-06 1985-10-08 Texas Instruments Incorporated Method of forming a titanium disilicide
US4717449A (en) * 1984-04-25 1988-01-05 Honeywell Inc. Dielectric barrier material
JPS61137367A (ja) * 1984-12-10 1986-06-25 Hitachi Ltd 半導体集積回路装置の製造方法
US4676866A (en) * 1985-05-01 1987-06-30 Texas Instruments Incorporated Process to increase tin thickness
US4657628A (en) * 1985-05-01 1987-04-14 Texas Instruments Incorporated Process for patterning local interconnects
US4675073A (en) * 1986-03-07 1987-06-23 Texas Instruments Incorporated Tin etch process
US4722910A (en) * 1986-05-27 1988-02-02 Analog Devices, Inc. Partially self-aligned metal contact process

Also Published As

Publication number Publication date
EP0305147B1 (de) 1994-07-13
JP2598479B2 (ja) 1997-04-09
US4784973A (en) 1988-11-15
JPH01144625A (ja) 1989-06-06
EP0305147A1 (de) 1989-03-01
DE3850624T2 (de) 1994-12-22

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee