DE69415631D1 - Verfahren zur Wiederverwertung der Kunstharzabfälle und Vorrichtung dafür - Google Patents
Verfahren zur Wiederverwertung der Kunstharzabfälle und Vorrichtung dafürInfo
- Publication number
- DE69415631D1 DE69415631D1 DE69415631T DE69415631T DE69415631D1 DE 69415631 D1 DE69415631 D1 DE 69415631D1 DE 69415631 T DE69415631 T DE 69415631T DE 69415631 T DE69415631 T DE 69415631T DE 69415631 D1 DE69415631 D1 DE 69415631D1
- Authority
- DE
- Germany
- Prior art keywords
- synthetic resin
- device therefor
- resin waste
- recycling synthetic
- recycling
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/256—Exchangeable extruder parts
- B29C48/2564—Screw parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/402—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/67—Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/76—Venting, drying means; Degassing means
- B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
- B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
- B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/26—Scrap or recycled material
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/911—Recycling consumer used articles or products
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27266293A JP2909577B2 (ja) | 1993-10-29 | 1993-10-29 | 樹脂廃材の再生方法及び装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69415631D1 true DE69415631D1 (de) | 1999-02-11 |
DE69415631T2 DE69415631T2 (de) | 1999-06-17 |
Family
ID=17517045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1994615631 Expired - Lifetime DE69415631T2 (de) | 1993-10-29 | 1994-10-28 | Verfahren zur Wiederverwertung der Kunstharzabfälle und Vorrichtung dafür |
Country Status (4)
Country | Link |
---|---|
US (2) | US5539004A (de) |
EP (1) | EP0650813B1 (de) |
JP (1) | JP2909577B2 (de) |
DE (1) | DE69415631T2 (de) |
Families Citing this family (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995029205A1 (fr) * | 1994-04-27 | 1995-11-02 | Matsushita Electric Industrial Co., Ltd. | Composition thermodurcissable, materiau de moulage, structure moulee et procede de decomposition de ceux-ci |
KR960037237A (ko) * | 1995-04-15 | 1996-11-19 | 한승준 | 수지성형물 분쇄 및 수지성형물의 도막분리 장치와 그 방법 |
JP3081132B2 (ja) * | 1995-04-28 | 2000-08-28 | トヨタ自動車株式会社 | 塗膜付き樹脂の再生処理方法 |
DE19521009A1 (de) * | 1995-06-08 | 1996-12-12 | Wacker Chemie Gmbh | Kontinuierlicher thermischer Abbau von Organopolysiloxanen |
JPH0999434A (ja) * | 1995-08-01 | 1997-04-15 | Mitsubishi Heavy Ind Ltd | 樹脂表面塗膜除去方法及びその装置 |
JP3134240B2 (ja) * | 1995-11-09 | 2001-02-13 | 株式会社豊田中央研究所 | 架橋ポリウレタン樹脂粉末とその製造方法 |
WO1997033480A1 (en) * | 1996-03-14 | 1997-09-18 | Apv North America, Inc. | Movably mounted feed-roll head for extruders |
EP1075377B1 (de) * | 1998-05-07 | 2003-10-01 | Ato Bv | Verfahren und vorrichtung zur kontinuierlichen herstellung von verbundwerkstoffen aus kunststoff und cellulose fasern |
JP2000044669A (ja) * | 1998-08-04 | 2000-02-15 | Teijin Ltd | 芳香族ポリカーボネートの製造方法および真空捕集系 |
KR100318140B1 (ko) * | 1998-10-02 | 2001-12-29 | 권순구 | 열경화성 수지 함유 스크랩 분쇄물, 이를 이용한 조성물, 및 그 용도 |
JP3982783B2 (ja) * | 1998-10-28 | 2007-09-26 | 株式会社ブリヂストン | 加硫ゴムの再生処理方法 |
JP4365984B2 (ja) * | 1999-05-14 | 2009-11-18 | キヤノン株式会社 | 再生プラスチック材料の製造方法 |
CA2375136C (en) * | 1999-06-08 | 2005-03-01 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Method of reclaiming crosslinked rubber and molding of reclaimed rubber |
IT1319996B1 (it) * | 2000-03-23 | 2003-11-12 | Maris Flli Spa | Elemento di miscelazione per vite di estrusore bivite corotante edestrusore che lo comprende. |
DE10050295A1 (de) * | 2000-10-10 | 2002-04-11 | Buehler Ag | Mehrwellen-Extruder und Verfahren zur Aufbereitung und/oder Vorarbeitung von mit Füllstoff versetzten Elastomeren |
JP3656957B2 (ja) * | 2001-01-16 | 2005-06-08 | 株式会社神戸製鋼所 | 二軸連続混練機とこれによる混練方法 |
US7049361B2 (en) * | 2001-03-14 | 2006-05-23 | Sumitomo Chemical Company, Limited | Polyolefin series resinfilm, composition for preparing the same, process for preparing the composition for preparing the same, and apparatus for preparing the same |
JP3868757B2 (ja) | 2001-04-25 | 2007-01-17 | 株式会社神戸製鋼所 | ゴム系組成物の混練装置および混練方法 |
US6833096B2 (en) * | 2001-08-29 | 2004-12-21 | General Electric Company | Method for removing water and other volatile components from polymer powders |
DE10149765B4 (de) * | 2001-10-02 | 2004-03-18 | Krauss-Maffei Kunststofftechnik Gmbh | Kämmelement |
US7021816B2 (en) * | 2002-04-08 | 2006-04-04 | Robert Malloy | Plasticating screw |
DE10233214B4 (de) * | 2002-07-22 | 2005-01-27 | 3+Extruder Gmbh | Extruder zum kontinuierlichen Bearbeiten und/oder Verarbeiten von fließfähigen Materialien |
JP3886467B2 (ja) * | 2003-04-10 | 2007-02-28 | 株式会社日本製鋼所 | スクリュ式混練押出機 |
JP4255873B2 (ja) * | 2004-03-30 | 2009-04-15 | 株式会社神戸製鋼所 | コニカル二軸押出機及び脱水装置 |
EP1757420B1 (de) * | 2004-06-03 | 2014-11-26 | Mitsubishi Heavy Industries, Ltd. | Kontinuierlich arbeitendes knetverfahren |
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JP4252016B2 (ja) * | 2004-06-21 | 2009-04-08 | 株式会社神戸製鋼所 | 押出機 |
DE102004052055B4 (de) * | 2004-10-26 | 2014-11-20 | Blach Verwaltung Gmbh & Co.Kg | Extruder |
ATE468912T1 (de) * | 2005-04-18 | 2010-06-15 | Gea Pharma Systems Nv | Vorrichtung zur durchgehenden granulierung und verfahren zur durchgehenden granulierung von pulvermaterial |
US8123394B2 (en) * | 2005-10-17 | 2012-02-28 | Evonik Degussa Gmbh | Mixer for liquid colorants and method for mixing liquid colorants |
JP4445478B2 (ja) * | 2006-03-10 | 2010-04-07 | 株式会社日本製鋼所 | プラスチック原料の可塑化混練押出機 |
DE102006014692B3 (de) * | 2006-03-28 | 2007-08-02 | Berstorff Gmbh | Schneckenelement |
DE102006022123C5 (de) * | 2006-05-11 | 2010-07-29 | Kiefel Extrusion Gmbh | Schneckenpresse für die Verarbeitung thermoplastischer und nicht vernetzender Polymere |
JP2008302555A (ja) * | 2007-06-06 | 2008-12-18 | Japan Steel Works Ltd:The | 廃プラスチックの処理方法及びその装置 |
GB2450704A (en) * | 2007-07-03 | 2009-01-07 | Mars Inc | Screw extruder with a fluid inlet and a method of extruding |
JP4746014B2 (ja) * | 2007-07-09 | 2011-08-10 | 株式会社日本製鋼所 | 溶融混練脱揮押出機 |
US20110133355A1 (en) * | 2007-10-19 | 2011-06-09 | Kotaro Takita | Extruder Having Dual Mixing Stages And Process For Preparing A Mixture Of Polymer And Diluent |
US8770824B2 (en) * | 2007-10-19 | 2014-07-08 | Toray Battery Separator Film Co., Ltd. | Extruder and process for preparing a mixture of polymer and diluent |
DE102008029303A1 (de) | 2008-06-20 | 2009-12-24 | Bayer Technology Services Gmbh | Schneckenelemente mit verbesserter Dispergierwirkung und geringem Energieeintrag |
JP5333591B2 (ja) * | 2009-08-18 | 2013-11-06 | トヨタ自動車株式会社 | シールリング |
WO2011021272A1 (ja) * | 2009-08-18 | 2011-02-24 | トヨタ自動車株式会社 | 植物バイオマスの前処理方法 |
JP5263398B2 (ja) | 2009-08-18 | 2013-08-14 | トヨタ自動車株式会社 | スクリューセグメント |
KR101852206B1 (ko) * | 2009-12-04 | 2018-04-25 | 유니온 카바이드 케미칼즈 앤드 플라스틱스 테크날러지 엘엘씨 | 압출기 스크루 |
WO2012120637A1 (ja) * | 2011-03-08 | 2012-09-13 | 日立マクセル株式会社 | 混練装置、及び熱可塑性樹脂成形体の製造方法 |
US20120282409A1 (en) * | 2011-05-03 | 2012-11-08 | Emerson Climate Technologies, Inc. | Recycled nylon materials for use in refrigeration systems |
JP6038557B2 (ja) * | 2012-09-06 | 2016-12-07 | トヨタ自動車株式会社 | 電極ペースト製造装置および電極ペースト製造方法 |
JP6039403B2 (ja) * | 2012-12-21 | 2016-12-07 | 三菱エンジニアリングプラスチックス株式会社 | エンジニアリングプラスチックスの押出し成形方法 |
JP6198666B2 (ja) * | 2014-04-22 | 2017-09-20 | 宏平 澤 | 混練装置 |
EP3393747B1 (de) | 2015-12-24 | 2021-09-15 | Pirelli Tyre S.p.A. | Extrusionsvorrichtung und verfahren zum extrudieren eines halbzeugs aus elastomerem werkstoff |
US11254760B2 (en) | 2018-04-26 | 2022-02-22 | Daikin Industries, Ltd. | Method for producing purified fluoropolymer |
EP3815876B1 (de) | 2018-07-26 | 2023-05-17 | Daikin Industries, Ltd. | Verfahren zur herstellung eines harzformkörpers |
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LU502091B1 (en) * | 2022-05-13 | 2023-11-13 | saperatec GmbH | Method and apparatus for removing low molecular impurities from an impure extrudable material |
DE102022113375A1 (de) | 2022-05-26 | 2023-11-30 | Neveon Germany Gmbh | Umsetzung von Polyurethan in einem Extruder |
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DE4230572A1 (de) * | 1992-09-12 | 1994-03-17 | Krupp Maschinentechnik | Polymerwerkstoffwiederverwertung |
US5286424A (en) * | 1992-11-09 | 1994-02-15 | Mobil Oil Corporation | Recycling polyolefins coated with chlorine-containing polymer |
WO1994023931A1 (en) * | 1993-04-08 | 1994-10-27 | Christopher Green | Mixing apparatus and method |
US5414021A (en) * | 1993-08-02 | 1995-05-09 | General Electric Company | Method for salvaging aromatic polycarbonate blend values |
US5424013A (en) * | 1993-08-09 | 1995-06-13 | Lieberman; Mark | Thermoplastic closed loop recycling process |
DE4333233C2 (de) * | 1993-09-30 | 1995-10-12 | Berstorff Gmbh Masch Hermann | Schmelzeabdichteinrichtung an Extrudern für thermoplastische Kunststoffe oder Kautschuk |
JPH07112436A (ja) * | 1993-10-19 | 1995-05-02 | Mitsubishi Motors Corp | 塗膜付き樹脂部品の再生方法 |
-
1993
- 1993-10-29 JP JP27266293A patent/JP2909577B2/ja not_active Expired - Lifetime
-
1994
- 1994-10-28 EP EP19940117088 patent/EP0650813B1/de not_active Expired - Lifetime
- 1994-10-28 US US08/330,524 patent/US5539004A/en not_active Expired - Lifetime
- 1994-10-28 DE DE1994615631 patent/DE69415631T2/de not_active Expired - Lifetime
-
1996
- 1996-04-16 US US08/633,189 patent/US5851065A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH07124945A (ja) | 1995-05-16 |
EP0650813B1 (de) | 1998-12-30 |
JP2909577B2 (ja) | 1999-06-23 |
EP0650813A1 (de) | 1995-05-03 |
DE69415631T2 (de) | 1999-06-17 |
US5539004A (en) | 1996-07-23 |
US5851065A (en) | 1998-12-22 |
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