DE102006014235A1 - Mantel für wärmeisolierte Leitungsrohre - Google Patents

Mantel für wärmeisolierte Leitungsrohre Download PDF

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Publication number
DE102006014235A1
DE102006014235A1 DE102006014235A DE102006014235A DE102006014235A1 DE 102006014235 A1 DE102006014235 A1 DE 102006014235A1 DE 102006014235 A DE102006014235 A DE 102006014235A DE 102006014235 A DE102006014235 A DE 102006014235A DE 102006014235 A1 DE102006014235 A1 DE 102006014235A1
Authority
DE
Germany
Prior art keywords
jacket
polyethylene
granules
thermoplastic
low density
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.)
Withdrawn
Application number
DE102006014235A
Other languages
German (de)
English (en)
Inventor
Roberto Rudi
Anja Bolli
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.)
Brugg Rohr AG Holding
Original Assignee
Brugg Rohr AG Holding
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38289897&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE102006014235(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Brugg Rohr AG Holding filed Critical Brugg Rohr AG Holding
Priority to DE102006014235A priority Critical patent/DE102006014235A1/de
Priority to US11/717,452 priority patent/US7528320B2/en
Priority to DE502007000712T priority patent/DE502007000712D1/de
Priority to AT07005539T priority patent/ATE431519T1/de
Priority to SI200730043T priority patent/SI1840444T1/sl
Priority to DK07005539T priority patent/DK1840444T3/da
Priority to ES07005539T priority patent/ES2327072T3/es
Priority to EP07005539A priority patent/EP1840444B1/de
Priority to PL07005539T priority patent/PL1840444T3/pl
Priority to RU2007111280/06A priority patent/RU2355941C2/ru
Priority to JP2007081068A priority patent/JP5303115B2/ja
Priority to KR1020070029766A priority patent/KR101364419B1/ko
Priority to CN2007100918526A priority patent/CN101046273B/zh
Publication of DE102006014235A1 publication Critical patent/DE102006014235A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/10—Bandages or covers for the protection of the insulation, e.g. against the influence of the environment or against mechanical damage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1228—Joining preformed parts by the expanding material
    • B29C44/1242—Joining preformed parts by the expanding material the preformed parts being concentric
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
    • B29C44/324—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables the preformed parts being tubular or folded to a tubular shape
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/143—Pre-insulated pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/153—Arrangements for the insulation of pipes or pipe systems for flexible pipes
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0616—VLDPE, i.e. very low density polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0625—LLDPE, i.e. linear low density polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0633—LDPE, i.e. low density polyethylene
    • 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/048—Expandable particles, beads or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B29L2023/225—Insulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Insulation (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Laminated Bodies (AREA)
DE102006014235A 2006-03-28 2006-03-28 Mantel für wärmeisolierte Leitungsrohre Withdrawn DE102006014235A1 (de)

Priority Applications (13)

Application Number Priority Date Filing Date Title
DE102006014235A DE102006014235A1 (de) 2006-03-28 2006-03-28 Mantel für wärmeisolierte Leitungsrohre
US11/717,452 US7528320B2 (en) 2006-03-28 2007-03-12 Jacket for heat-insulated conduits and method for making same
PL07005539T PL1840444T3 (pl) 2006-03-28 2007-03-19 Sposób wytwarzania płaszcza izolowanej cieplnie rury przewodowej
ES07005539T ES2327072T3 (es) 2006-03-28 2007-03-19 Proceso para producir un revestimiento de un conducto con aislamiento termico.
AT07005539T ATE431519T1 (de) 2006-03-28 2007-03-19 Verfahren zur herstellung eines mantels für ein wärmeisoliertes leitungsrohr
SI200730043T SI1840444T1 (sl) 2006-03-28 2007-03-19 Postopek izdelave plašča toplotno izolirane cevi
DK07005539T DK1840444T3 (da) 2006-03-28 2007-03-19 Fremgangsmåde til fremstilling af en kappe til et varmeisoleret ledningsrör
DE502007000712T DE502007000712D1 (de) 2006-03-28 2007-03-19 Verfahren zur Herstellung eines Mantels für ein wärmeisoliertes Leitungsrohr
EP07005539A EP1840444B1 (de) 2006-03-28 2007-03-19 Verfahren zur Herstellung eines Mantels für ein wärmeisoliertes Leitungsrohr
RU2007111280/06A RU2355941C2 (ru) 2006-03-28 2007-03-27 Способ изготовления кожуха для гибких теплоизолированных трубопроводов
JP2007081068A JP5303115B2 (ja) 2006-03-28 2007-03-27 熱絶縁された導管用の外筒を製造するための方法
KR1020070029766A KR101364419B1 (ko) 2006-03-28 2007-03-27 단열 도관용 외피
CN2007100918526A CN101046273B (zh) 2006-03-28 2007-03-28 用于加工用于柔性的隔热的导管的发泡或被充气的外壳的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006014235A DE102006014235A1 (de) 2006-03-28 2006-03-28 Mantel für wärmeisolierte Leitungsrohre

Publications (1)

Publication Number Publication Date
DE102006014235A1 true DE102006014235A1 (de) 2007-10-04

Family

ID=38289897

Family Applications (2)

Application Number Title Priority Date Filing Date
DE102006014235A Withdrawn DE102006014235A1 (de) 2006-03-28 2006-03-28 Mantel für wärmeisolierte Leitungsrohre
DE502007000712T Active DE502007000712D1 (de) 2006-03-28 2007-03-19 Verfahren zur Herstellung eines Mantels für ein wärmeisoliertes Leitungsrohr

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE502007000712T Active DE502007000712D1 (de) 2006-03-28 2007-03-19 Verfahren zur Herstellung eines Mantels für ein wärmeisoliertes Leitungsrohr

Country Status (12)

Country Link
US (1) US7528320B2 (https=)
EP (1) EP1840444B1 (https=)
JP (1) JP5303115B2 (https=)
KR (1) KR101364419B1 (https=)
CN (1) CN101046273B (https=)
AT (1) ATE431519T1 (https=)
DE (2) DE102006014235A1 (https=)
DK (1) DK1840444T3 (https=)
ES (1) ES2327072T3 (https=)
PL (1) PL1840444T3 (https=)
RU (1) RU2355941C2 (https=)
SI (1) SI1840444T1 (https=)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007004596U1 (de) 2007-03-26 2007-05-31 Rehau Ag + Co Kunststoffrohr
GB2455541B (en) * 2007-12-12 2012-12-26 Planit Products Ltd Improvements to oven safety thermally isolating oven shelf guard
EP2138751B1 (de) * 2008-06-28 2013-02-20 Brugg Rohr AG, Holding Verfahren zur Herstellung eines flexiblen wärmeisolierten Leitungsrohrs
LT2586602T (lt) 2010-06-28 2018-12-27 Obschestvo S Ogranichennoy Otvetstvennostiyu "Smit-Yartsevo" Termoizoliacinio lankstaus vamzdžio gamybos būdas
EP2404733A1 (en) * 2010-07-05 2012-01-11 Logstor A/S Method for manufacturing an insulated pipe using a bag
LT2620268T (lt) 2010-09-20 2017-01-25 Obschestvo S Ogranichennoy Otvetstvennostiyu "Smit-Yartsevo" Lankstaus vamzdžio su termine izoliacija gamybos linija
JP2013076437A (ja) * 2011-09-30 2013-04-25 Mirai Ind Co Ltd 被覆流体管
DE102012101869A1 (de) * 2012-03-06 2013-09-12 Rehau Ag + Co Verwendung eines Polymermaterials
CZ24147U1 (cs) 2012-05-04 2012-08-06 Jícha@Filip Ochranný plášt tepelne izolovaného rozvádecího potrubí
CH707764A2 (de) * 2013-03-06 2014-09-15 Brugg Rohr Ag Holding Wärmegedämmtes gewelltes Leitungsrohr.
CN104006265B (zh) * 2014-06-11 2016-02-03 山东齐鲁石化工程有限公司 径向热膨胀保温装置
DE102015110401B4 (de) * 2015-06-29 2019-08-01 Brugg Rohrsysteme Gmbh Verfahren und Vorrichtung zur Beschichtung einer Rohrleitung
CH712780B1 (de) * 2016-07-20 2020-03-13 Brugg Rohr Ag Holding Thermisch gedämmte Mediumrohre mit HFO-haltigem Zellgas.
JP7402636B2 (ja) * 2019-08-13 2023-12-21 未来工業株式会社 管装置
EP3871873A1 (de) 2020-02-26 2021-09-01 Brugg Rohr AG Holding Thermisch gedämmtes rohr
FR3131616B1 (fr) * 2022-01-05 2026-04-17 Schulz Jean Michel Dispositif de canalisation isolée et flexible pour le transport des fluides cryogéniques, réfrigérants et/ou caloporteurs.

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DE19815046A1 (de) * 1998-04-03 1999-10-14 Borealis Ag Polyolefinfolien und Polyolefinbeschichtungen von Substraten
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CN101046273B (zh) 2010-11-10
ES2327072T3 (es) 2009-10-23
EP1840444B1 (de) 2009-05-13
CN101046273A (zh) 2007-10-03
RU2355941C2 (ru) 2009-05-20
SI1840444T1 (sl) 2010-01-29
JP2007261267A (ja) 2007-10-11
EP1840444A1 (de) 2007-10-03
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DK1840444T3 (da) 2009-08-31
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