ATE320303T1 - Filtermedium und damit ausgestattete luftfiltereinheit - Google Patents

Filtermedium und damit ausgestattete luftfiltereinheit

Info

Publication number
ATE320303T1
ATE320303T1 AT97913485T AT97913485T ATE320303T1 AT E320303 T1 ATE320303 T1 AT E320303T1 AT 97913485 T AT97913485 T AT 97913485T AT 97913485 T AT97913485 T AT 97913485T AT E320303 T1 ATE320303 T1 AT E320303T1
Authority
AT
Austria
Prior art keywords
unit equipped
filter medium
air
pressure loss
filter unit
Prior art date
Application number
AT97913485T
Other languages
English (en)
Inventor
Osamu Tanaka
Toshio Kusumi
Yoshiyuki Shibuya
Takeshi Tano
Original Assignee
Daikin Ind Ltd
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 Daikin Ind Ltd filed Critical Daikin Ind Ltd
Application granted granted Critical
Publication of ATE320303T1 publication Critical patent/ATE320303T1/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/36—Polytetrafluoroethylene
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08—Hollow fibre membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/107—Organic support material
    • B01D69/1071—Woven, non-woven or net mesh
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/08—Specific temperatures applied
    • B01D2323/081—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/08—Specific temperatures applied
    • B01D2323/082—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/0283—Pore size
    • B01D2325/02834—Pore size more than 0.1 and up to 1 µm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/20—Specific permeability or cut-off range
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluoroethylene, e.g. ePTFE, i.e. expanded polytetrafluoroethylene
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249978—Voids specified as micro
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/647—Including a foamed layer or component

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Filtering Materials (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Paper (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
AT97913485T 1996-12-04 1997-12-01 Filtermedium und damit ausgestattete luftfiltereinheit ATE320303T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32436696 1996-12-04

Publications (1)

Publication Number Publication Date
ATE320303T1 true ATE320303T1 (de) 2006-04-15

Family

ID=18164993

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97913485T ATE320303T1 (de) 1996-12-04 1997-12-01 Filtermedium und damit ausgestattete luftfiltereinheit

Country Status (10)

Country Link
US (1) US6261979B1 (de)
EP (1) EP0972559B1 (de)
JP (1) JP3467779B2 (de)
KR (1) KR100517888B1 (de)
CN (1) CN1140326C (de)
AT (1) ATE320303T1 (de)
CA (1) CA2274078C (de)
DE (1) DE69735480T2 (de)
TW (1) TW371284B (de)
WO (1) WO1998026860A1 (de)

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW438678B (en) * 1996-08-09 2001-06-07 Daikin Ind Ltd Fire-retardant filter medium and air filter unit using the same
GB9816118D0 (en) * 1998-07-23 1998-09-23 Pall Corp Filter assemblies
US6642513B1 (en) * 1998-10-06 2003-11-04 General Electric Company Materials and apparatus for the detection of contraband
JP2000176262A (ja) * 1998-12-11 2000-06-27 Daikin Ind Ltd 多孔性材料、エアフィルター濾材、エアフィルターユニットおよびエアフィルター濾材用支持材料
NZ517950A (en) * 1999-09-22 2003-05-30 W Cover for aerobic treatment of biodegradable matter
JP4066913B2 (ja) * 1999-10-07 2008-03-26 ダイキン工業株式会社 エアフィルターパックおよびエアフィルターユニット
JP3584855B2 (ja) * 1999-10-07 2004-11-04 ダイキン工業株式会社 エアフィルター濾材
US6474336B1 (en) * 2000-03-20 2002-11-05 Michael Wolfe Mini pleated face mask
JP3362730B2 (ja) * 2000-08-24 2003-01-07 ダイキン工業株式会社 エアフィルター濾材、それを用いたエアフィルターパック及びエアフィルターユニット並びにエアフィルター濾材の製造方法
KR100402559B1 (ko) * 2000-09-29 2003-10-30 (주) 일진프라임 열가소성 합성수지를 이용한 다공성 집진/집수장치필터 및그 제조방법
US6579350B2 (en) 2000-11-14 2003-06-17 Lydall, Inc. Air laid/wet laid gas filtration media
DE10065265A1 (de) * 2000-12-29 2002-07-04 Hans G Platsch Vorrichtung zum Bestäuben von Produkten
JP5051944B2 (ja) * 2001-03-16 2012-10-17 日東電工株式会社 エアフィルタ用濾材およびその製造方法
KR100570036B1 (ko) * 2001-04-05 2006-04-10 다이킨 고교 가부시키가이샤 필터 여재, 그것을 이용한 필터 팩 및 에어 필터 유니트및 필터 여재의 제조 방법
JP4826023B2 (ja) * 2001-04-05 2011-11-30 ダイキン工業株式会社 フィルタ濾材、それを用いたフィルタパック及びエアフィルタユニット並びにフィルタ濾材の製造方法
JP2002346319A (ja) * 2001-05-21 2002-12-03 Nitto Denko Corp タービン用吸気フィルタ濾材
JP2002346320A (ja) * 2001-05-24 2002-12-03 Daikin Ind Ltd フィルタ濾材、フィルタパック及びエアフィルタユニットの製造方法
EP1266681B1 (de) * 2001-06-13 2013-12-25 Nitto Denko Corporation Turbinenfiltermedium sowie Verfahren zu seiner Verwendung und seiner Herstellung
US6999273B2 (en) * 2002-02-13 2006-02-14 Seagate Technology Llc Filter assembly for a data storage device
US20040261376A1 (en) * 2003-06-26 2004-12-30 Morgan Lee Pendleton Pleated air filter with reverse pulsating air flow cleaning
WO2006044712A1 (en) * 2004-10-14 2006-04-27 Pall Corporation Separation elements and methods of making separation elements
JP4914569B2 (ja) * 2004-12-08 2012-04-11 ダイワボウホールディングス株式会社 筒状フィルターおよびその製造方法
US7604687B2 (en) * 2005-06-03 2009-10-20 Daramic Llc Gas filtration media
DE102005037313A1 (de) * 2005-08-04 2007-02-15 Carl Freudenberg Kg Filterelement und Anordnung
EP1932575B1 (de) * 2005-10-04 2014-11-26 Toray Industries, Inc. Vliesstoff für filter
JP4963185B2 (ja) * 2006-03-28 2012-06-27 日東電工株式会社 ポリテトラフルオロエチレン多孔質膜の製造方法とフィルター濾材ならびにフィルターユニット
US7585358B2 (en) * 2006-08-24 2009-09-08 Seagate Technology Llc Small and large particle recirculation filter
JP5207220B2 (ja) * 2006-11-07 2013-06-12 三菱レイヨン株式会社 中空状多孔質膜用支持体、中空状多孔質膜およびそれらの製造方法
JP5160984B2 (ja) * 2007-07-18 2013-03-13 日東電工株式会社 防水通音膜、防水通音膜の製造方法およびそれを用いた電気製品
EP2198944A4 (de) * 2007-09-08 2012-03-28 Nippon Muki Kk Filtermedium für luftfilter und luftfilter
CN101939072B (zh) * 2007-11-09 2017-04-05 霍林斯沃思和沃斯有限公司 熔喷过滤介质
US8986432B2 (en) * 2007-11-09 2015-03-24 Hollingsworth & Vose Company Meltblown filter medium, related applications and uses
US8673040B2 (en) 2008-06-13 2014-03-18 Donaldson Company, Inc. Filter construction for use with air in-take for gas turbine and methods
US7942275B2 (en) * 2008-07-08 2011-05-17 Bha Group, Inc. Expanded PFTE membrane and method of making
JP5094610B2 (ja) * 2008-07-23 2012-12-12 日東電工株式会社 エアフィルタ濾材およびそれを用いたエアフィルタユニット
JP4944864B2 (ja) * 2008-11-04 2012-06-06 日東電工株式会社 ポリテトラフルオロエチレン多孔質膜およびその製造方法ならびに防水通気フィルタ
KR101249195B1 (ko) * 2009-01-21 2013-04-03 닛토덴코 가부시키가이샤 방수 통음막과 그 제조 방법 및 그것을 사용한 전기 제품
US8950587B2 (en) 2009-04-03 2015-02-10 Hollingsworth & Vose Company Filter media suitable for hydraulic applications
US8262780B2 (en) * 2009-07-22 2012-09-11 Bha Group, Inc High performance gas turbine inlet filter (HEPA) using membrane media
US8679218B2 (en) 2010-04-27 2014-03-25 Hollingsworth & Vose Company Filter media with a multi-layer structure
JP5012990B2 (ja) * 2010-06-17 2012-08-29 ダイキン工業株式会社 多孔膜を備える濾材、その製造方法、フィルタパック、ならびにフィルタユニット
JP5651393B2 (ja) 2010-07-08 2015-01-14 出光興産株式会社 石油樹脂の製造方法
US20120152821A1 (en) 2010-12-17 2012-06-21 Hollingsworth & Vose Company Fine fiber filter media and processes
US10155186B2 (en) 2010-12-17 2018-12-18 Hollingsworth & Vose Company Fine fiber filter media and processes
WO2013005430A1 (ja) * 2011-07-05 2013-01-10 日東電工株式会社 ポリテトラフルオロエチレン多孔質膜およびエアフィルタ濾材
JP5917944B2 (ja) * 2012-02-23 2016-05-18 日東電工株式会社 混紡不織布、フィルタ濾材およびフィルタユニット
JP2014124578A (ja) * 2012-12-26 2014-07-07 Nippon Valqua Ind Ltd フィルター用ろ材およびその製造方法
US9694306B2 (en) 2013-05-24 2017-07-04 Hollingsworth & Vose Company Filter media including polymer compositions and blends
JP6453537B2 (ja) * 2013-12-27 2019-01-16 日東電工株式会社 透湿性濾材
US9777934B2 (en) 2014-02-19 2017-10-03 Fiber Bond Corporation Panel filter and method for manufacturing the same
CN105879698A (zh) * 2014-10-30 2016-08-24 杭州安普鲁薄膜科技有限公司 一种防霉膜
US10343095B2 (en) 2014-12-19 2019-07-09 Hollingsworth & Vose Company Filter media comprising a pre-filter layer
JP6115596B2 (ja) * 2014-12-26 2017-04-19 ダイキン工業株式会社 エアフィルタ用濾材、フィルタパック、エアフィルタユニット、およびエアフィルタ用濾材の製造方法
WO2017056508A1 (ja) * 2015-09-30 2017-04-06 日東電工株式会社 エアフィルタ濾材、エアフィルタパック及びエアフィルタユニット
JP6372507B2 (ja) * 2016-03-11 2018-08-15 ダイキン工業株式会社 エアフィルタ用濾材、エアフィルタユニット、およびエアフィルタ用濾材の製造方法
US12420221B2 (en) 2016-07-01 2025-09-23 Hollingsworth & Vose Company Multi-layered electret-containing filtration media
JP7356971B2 (ja) * 2018-06-01 2023-10-05 日東電工株式会社 フィルタ濾材とこれを備えるフィルタユニット
EP4023319A4 (de) * 2019-08-30 2023-09-13 Daikin Industries, Ltd. Luftfiltermaterial und luftfilterprodukt
WO2021235460A1 (ja) * 2020-05-18 2021-11-25 住友電気工業株式会社 フッ素樹脂シート、多層シート及びシールド材
CN115869770A (zh) * 2021-09-29 2023-03-31 恩特格里斯公司 医用排气过滤器
JP2024536139A (ja) * 2021-09-29 2024-10-04 インテグリス・インコーポレーテッド 医療用通気フィルタ
CN114381863B (zh) * 2022-01-26 2024-03-12 南京瑞洁特膜分离科技有限公司 水刺无纺布基材的制法及其作为过滤膜支撑材料的应用

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596837A (en) 1982-02-22 1986-06-24 Daikin Industries Ltd. Semisintered polytetrafluoroethylene article and production thereof
US4557957A (en) 1983-03-18 1985-12-10 W. L. Gore & Associates, Inc. Microporous metal-plated polytetrafluoroethylene articles and method of manufacture
JPS6058208A (ja) * 1983-09-09 1985-04-04 Kurabo Ind Ltd フイルタ−エレメントとその製法
US4588646A (en) 1984-10-15 1986-05-13 Athey Jr Robert D Protective sheet for articles of clothing and the like
US5019140A (en) 1988-12-21 1991-05-28 W. L. Gore & Associates, Inc. Irradiated expanded polytetrafluoroethylene composites, and devices using them, and processes for making them
JP2788976B2 (ja) * 1989-04-26 1998-08-20 ジャパンゴアテック株式会社 フィルター材
WO1991008829A1 (en) 1989-12-18 1991-06-27 W.L. Gore & Associates, Inc. New filter media for use in surgical and clean room masks
JP2792354B2 (ja) * 1991-07-23 1998-09-03 ダイキン工業株式会社 ポリテトラフルオロエチレン多孔膜
CA2074349C (en) 1991-07-23 2004-04-20 Shinji Tamaru Polytetrafluoroethylene porous film and preparation and use thereof
WO1993013849A1 (fr) 1992-01-14 1993-07-22 Daikin Industries, Ltd. Filtre et element filtrant
US5366631A (en) * 1992-02-10 1994-11-22 Pall Corporation Composite, supported fluorocarbon media
JP3211447B2 (ja) 1993-01-25 2001-09-25 ダイキン工業株式会社 通気性シート状材料の積層方法
EP0743089B1 (de) 1993-01-25 2000-05-17 Daikin Industries, Limited Poröser Film aus Polytetrafluoroethylen
JPH08318114A (ja) 1995-05-25 1996-12-03 Nitto Denko Corp エレクトレットフィルタ

Also Published As

Publication number Publication date
DE69735480T2 (de) 2006-10-19
EP0972559B1 (de) 2006-03-15
KR100517888B1 (ko) 2005-09-29
KR20000057425A (ko) 2000-09-15
CA2274078A1 (en) 1998-06-25
CN1245446A (zh) 2000-02-23
CA2274078C (en) 2006-10-10
TW371284B (en) 1999-10-01
DE69735480D1 (de) 2006-05-11
EP0972559A4 (de) 2000-04-05
US6261979B1 (en) 2001-07-17
WO1998026860A1 (en) 1998-06-25
JP3467779B2 (ja) 2003-11-17
EP0972559A1 (de) 2000-01-19
CN1140326C (zh) 2004-03-03

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