SG120927A1 - A control system for an injection molding machine and a method for controlling the injection moldingmachine - Google Patents

A control system for an injection molding machine and a method for controlling the injection moldingmachine

Info

Publication number
SG120927A1
SG120927A1 SG200302491A SG200302491A SG120927A1 SG 120927 A1 SG120927 A1 SG 120927A1 SG 200302491 A SG200302491 A SG 200302491A SG 200302491 A SG200302491 A SG 200302491A SG 120927 A1 SG120927 A1 SG 120927A1
Authority
SG
Singapore
Prior art keywords
controlling
control system
molding machine
injection
injection molding
Prior art date
Application number
SG200302491A
Other languages
English (en)
Inventor
Mitsuaki Amano
Original Assignee
Sumitomo Heavy Industries
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 Sumitomo Heavy Industries filed Critical Sumitomo Heavy Industries
Publication of SG120927A1 publication Critical patent/SG120927A1/en

Links

Classifications

    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor
    • B29C2045/5032—Drive means therefor using means for detecting injection or back pressures
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76003—Measured parameter
    • B29C2945/76006—Pressure
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76003—Measured parameter
    • B29C2945/76013—Force
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76003—Measured parameter
    • B29C2945/76066—Time
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76003—Measured parameter
    • B29C2945/76083—Position
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76003—Measured parameter
    • B29C2945/7611—Velocity
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76177—Location of measurement
    • B29C2945/7618—Injection unit
    • B29C2945/76187—Injection unit 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76177—Location of measurement
    • B29C2945/7618—Injection unit
    • B29C2945/76214—Injection unit drive means
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76344—Phase or stage of measurement
    • B29C2945/76384—Holding, dwelling
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76498—Pressure
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76595—Velocity
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76655—Location of control
    • B29C2945/76658—Injection unit
    • B29C2945/76665—Injection unit 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76655—Location of control
    • B29C2945/76658—Injection unit
    • B29C2945/76692—Injection unit drive means
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76822—Phase or stage of control
    • B29C2945/76859—Injection
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76822—Phase or stage of control
    • B29C2945/76862—Holding, dwelling
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76929—Controlling method
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76929—Controlling method
    • B29C2945/76939—Using stored or historical data sets
    • B29C2945/76943—Using stored or historical data sets compare with thresholds
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
SG200302491A 2002-05-16 2003-05-07 A control system for an injection molding machine and a method for controlling the injection moldingmachine SG120927A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002141423A JP3917459B2 (ja) 2002-05-16 2002-05-16 射出成形機の制御装置及び制御方法

Publications (1)

Publication Number Publication Date
SG120927A1 true SG120927A1 (en) 2006-04-26

Family

ID=29267812

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200302491A SG120927A1 (en) 2002-05-16 2003-05-07 A control system for an injection molding machine and a method for controlling the injection moldingmachine

Country Status (10)

Country Link
US (2) US7128854B2 (ko)
EP (2) EP1839839A1 (ko)
JP (1) JP3917459B2 (ko)
KR (1) KR100539167B1 (ko)
CN (1) CN1287969C (ko)
AT (1) ATE382464T1 (ko)
DE (1) DE60318349T2 (ko)
HK (1) HK1060713A1 (ko)
SG (1) SG120927A1 (ko)
TW (1) TWI288062B (ko)

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JP3830453B2 (ja) * 2003-01-15 2006-10-04 ファナック株式会社 射出成形機のモニタ装置
JP4392278B2 (ja) * 2004-03-25 2009-12-24 東芝機械株式会社 射出成形機における射出装置および射出成形機
US7346425B2 (en) * 2005-04-27 2008-03-18 Toshiba Kikai Kabushiki Kaisha Control device for use in injection molding machine
JP4594160B2 (ja) * 2005-04-28 2010-12-08 東芝機械株式会社 射出成形機の制御装置
JP4027380B2 (ja) 2005-06-02 2007-12-26 ファナック株式会社 射出成形機の制御装置
DE102006008184A1 (de) * 2006-02-22 2007-08-23 Demag Ergotech Gmbh Verfahren zur Herstellung von dünnwandigen Kunststoff-Formteilen
JP4825616B2 (ja) * 2006-08-07 2011-11-30 矢崎総業株式会社 射出成形機及び該射出成形機の制御方法
DE102008037098A1 (de) * 2008-08-08 2010-02-18 Sumitomo (Shi) Demag Plastics Machinery Gmbh Verfahren zur Steuerung des Einspritzhubes einer Spritzgieß-Schnecke
CN102216050B (zh) * 2008-10-23 2015-09-16 巴塞尔聚烯烃股份有限公司 用于制备聚乙烯容器、型坯和瓶子的注坯拉伸吹塑成型方法
JP5529629B2 (ja) * 2010-05-28 2014-06-25 東洋機械金属株式会社 射出成形機
JP5823210B2 (ja) * 2011-08-31 2015-11-25 住友重機械工業株式会社 射出成形機、および射出成形機の設定支援装置
WO2013051098A1 (ja) * 2011-10-04 2013-04-11 東洋機械金属株式会社 射出成形機における保圧工程制御方法
JP6026219B2 (ja) * 2012-10-22 2016-11-16 住友重機械工業株式会社 射出成形機
JP5877882B2 (ja) * 2014-07-17 2016-03-08 ファナック株式会社 射出成形機の圧力制御装置
JP6356041B2 (ja) * 2014-10-22 2018-07-11 住友重機械工業株式会社 射出成形機
US10543629B2 (en) 2014-12-11 2020-01-28 Inglass S.P.A. Method and apparatus for injection molding of plastic materials
JP6172716B2 (ja) * 2014-12-15 2017-08-02 株式会社名機製作所 射出成形機の制御方法および射出成形機
JP6193916B2 (ja) * 2015-05-25 2017-09-06 ファナック株式会社 射出成形システム
JP6552922B2 (ja) * 2015-08-31 2019-07-31 住友重機械工業株式会社 射出成形機
JP6657734B2 (ja) 2015-10-02 2020-03-04 東京電力ホールディングス株式会社 非常用炉心冷却系の代替循環冷却方法および原子力発電所
KR101659440B1 (ko) 2016-04-01 2016-09-23 최인덕 트위스팅 방식을 이용하는 기포제거장치 및 이를 구비한 사출성형기
US10836088B2 (en) * 2017-04-25 2020-11-17 Kistler Holding, Ag Method for reproducing injection molded parts of quality and injection molding unit for performing the method
TWI657911B (zh) * 2018-02-07 2019-05-01 National Kaohsiung University Of Science And Technology 監測成型品質的方法
KR102186831B1 (ko) * 2018-09-13 2020-12-04 케이비아이동국실업 주식회사 가열금형과 뮤셀 사출성형을 통한 수지 성형품 제조 방법 및 제조 장비
JP7209546B2 (ja) * 2019-01-21 2023-01-20 東洋機械金属株式会社 射出成形機およびその制御方法
CN114030152A (zh) * 2021-06-16 2022-02-11 青岛海尔模具有限公司 一种注塑工艺
CN113878829B (zh) * 2021-08-31 2023-05-12 东风汽车集团股份有限公司 基于Moldflow的汽车保险杠注塑成型工艺方法、设备及存储介质
CN114228042B (zh) * 2021-12-29 2023-08-22 江苏智石科技有限公司 一种注塑机的换模台车安全监控系统
DE102022103074A1 (de) 2022-02-09 2023-08-10 Arburg Gmbh + Co Kg Spritzgießeinheit
CN114570909B (zh) * 2022-05-06 2023-03-21 宁波力劲科技有限公司 挤压铸造机压射过程中挤压速度与压力的控制方法与系统
CN117103601B (zh) * 2023-10-25 2024-01-23 中南大学 一种超声能场波动的控制方法

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPS63170015A (ja) * 1987-01-07 1988-07-13 Toshiba Mach Co Ltd 射出成形機の計量速度制御方法
JPH05138686A (ja) * 1991-11-25 1993-06-08 Fanuc Ltd 射出成形機の成形材料供給方法およびその装置
JPH05278089A (ja) * 1992-04-01 1993-10-26 Toshiba Mach Co Ltd 電動式射出成形機の圧力制御装置
JP2000334791A (ja) * 1999-05-25 2000-12-05 Fanuc Ltd 射出成形機の計量制御装置

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US5371450A (en) * 1992-08-10 1994-12-06 Sumitomo Heavy Industries, Ltd. Control unit capable of smoothly carrying out a switching operation between position and pressure feedback control systems
JP3282092B2 (ja) * 1997-06-03 2002-05-13 日精樹脂工業株式会社 射出成形機の射出成形方法
JPH1190965A (ja) * 1997-09-18 1999-04-06 Sankyo Kasei Co Ltd 射出成形機並びに射出成形法
JP3240515B2 (ja) * 1998-12-10 2001-12-17 住友重機械工業株式会社 射出成形機の射出制御方法
JP3404652B2 (ja) * 2000-04-04 2003-05-12 住友重機械工業株式会社 射出成形機の充填工程制御方法及び制御装置
JP3546952B2 (ja) * 2000-09-08 2004-07-28 住友重機械工業株式会社 射出成形機の製品良否判別方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63170015A (ja) * 1987-01-07 1988-07-13 Toshiba Mach Co Ltd 射出成形機の計量速度制御方法
JPH05138686A (ja) * 1991-11-25 1993-06-08 Fanuc Ltd 射出成形機の成形材料供給方法およびその装置
JPH05278089A (ja) * 1992-04-01 1993-10-26 Toshiba Mach Co Ltd 電動式射出成形機の圧力制御装置
JP2000334791A (ja) * 1999-05-25 2000-12-05 Fanuc Ltd 射出成形機の計量制御装置

Also Published As

Publication number Publication date
HK1060713A1 (en) 2004-08-20
EP1362684A1 (en) 2003-11-19
US20030215536A1 (en) 2003-11-20
EP1362684B1 (en) 2008-01-02
KR100539167B1 (ko) 2005-12-27
TWI288062B (en) 2007-10-11
JP2003326573A (ja) 2003-11-19
TW200401697A (en) 2004-02-01
KR20030089493A (ko) 2003-11-21
CN1460586A (zh) 2003-12-10
ATE382464T1 (de) 2008-01-15
US7128854B2 (en) 2006-10-31
DE60318349T2 (de) 2008-12-18
EP1839839A1 (en) 2007-10-03
JP3917459B2 (ja) 2007-05-23
DE60318349D1 (de) 2008-02-14
CN1287969C (zh) 2006-12-06
US7485247B2 (en) 2009-02-03
US20070007683A1 (en) 2007-01-11

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