ES2062884T3 - METHOD FOR MANUFACTURING INSULATED BOARDS COMPOSED OF INTERCONNECTED MINERAL FIBER MINERAL ELEMENTS. - Google Patents

METHOD FOR MANUFACTURING INSULATED BOARDS COMPOSED OF INTERCONNECTED MINERAL FIBER MINERAL ELEMENTS.

Info

Publication number
ES2062884T3
ES2062884T3 ES92901216T ES92901216T ES2062884T3 ES 2062884 T3 ES2062884 T3 ES 2062884T3 ES 92901216 T ES92901216 T ES 92901216T ES 92901216 T ES92901216 T ES 92901216T ES 2062884 T3 ES2062884 T3 ES 2062884T3
Authority
ES
Spain
Prior art keywords
laminates
fibers
interconnected
mineral fiber
mineral
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
Application number
ES92901216T
Other languages
Spanish (es)
Inventor
Bent Jacobsen
Luis Jorgen Norgaard
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.)
Rockwool AS
Original Assignee
Rockwool International AS
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=8117081&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2062884(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rockwool International AS filed Critical Rockwool International AS
Application granted granted Critical
Publication of ES2062884T3 publication Critical patent/ES2062884T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D04H1/4226—Glass fibres characterised by the apparatus for manufacturing the glass fleece
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B2001/7683—Fibrous blankets or panels characterised by the orientation of the fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Nonwoven Fabrics (AREA)
  • Thermal Insulation (AREA)
  • Insulating Bodies (AREA)
  • Laminated Bodies (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Ladders (AREA)

Abstract

SE PRESENTA UN METODO PARA MANUFACTURAR ELEMENTOS AISLANTES EN FORMA DE TARJETA COMPUESTOS DE LAMINADOS DE FIBRAS MINERALES INTERCONECTADAS QUE COMPRENDE LA CONVERSION DE UNA FIBRA MINERAL EN ESTADO FUNDIDO QUE FORMA EL MATERIAL DE INICIO EN FIBRAS, EL SUMINISTRO DE UN AMALGAMADOR A DICHAS FIBRAS, PROVOCANDO QUE LAS FIBRAS FORMEN UNA BANDA CONTINUA, EL CORTADO DE LA BANDA DE FIBRAS EN LA DIRECCION LONGITUDINAL PARA FORMAR LAMINADOS, EL CORTADO DE DICHOS LAMINADOS EN LAS LONGITUDES DESEADAS, EL GIRO DE LOS LAMINADOS ALREDEDOR DE 90 (GRADOS) SOBRE SU EJE LONGITUDINAL Y LA UNION DE LAS FIBRAS PARA FORMAR TARJETAS, EL LAMINADO HA SIDO EXPUESTO A UNA COMPRESION SUPERFICIAL SEGUIDA DE UNA COMPRESION LONGITUDINAL TANTO ANTES COMO DESPUES DE QUE LA BANDA CONTINUA DE FIBRAS SEA CORTADO EN LAMINADOS.A METHOD FOR MANUFACTURING INSULATING ELEMENTS IN THE FORM OF A CARD COMPOSED OF INTERCONNECTED MINERAL FIBER LAMINATES IS PRESENTED, WHICH INCLUDES THE CONVERSION OF A MINERAL FIBER IN A MOLTEN STATE, WHICH PROVIDES A FACTORY SUPPLY TO ANY THE FIBERS FORM A CONTINUOUS BAND, THE CUTTING OF THE BAND OF FIBERS IN THE LONGITUDINAL DIRECTION TO FORM LAMINATES, THE CUTTING OF SUCH LAMINATES AT THE DESIRED LENGTHS, THE TURN OF THE LAMINATES AROUND 90 (DEGREES) AROUND THE AXIS AND THE LAW AXLE OF THE FIBERS TO FORM CARDS, THE LAMINATE HAS BEEN EXPOSED TO A SURFACE COMPRESSION FOLLOWED BY A LONGITUDINAL COMPRESSION BOTH BEFORE AND AFTER THE CONTINUOUS BAND OF FIBERS IS CUT IN LAMINATES.

ES92901216T 1990-12-07 1991-12-06 METHOD FOR MANUFACTURING INSULATED BOARDS COMPOSED OF INTERCONNECTED MINERAL FIBER MINERAL ELEMENTS. Expired - Lifetime ES2062884T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK291590A DK165926B (en) 1990-12-07 1990-12-07 PROCEDURE FOR THE MANUFACTURE OF INSULATION PLATES COMPOSED BY INVOLVED CONNECTED STABLE MINERAL FIBER ELEMENTS

Publications (1)

Publication Number Publication Date
ES2062884T3 true ES2062884T3 (en) 1994-12-16

Family

ID=8117081

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92901216T Expired - Lifetime ES2062884T3 (en) 1990-12-07 1991-12-06 METHOD FOR MANUFACTURING INSULATED BOARDS COMPOSED OF INTERCONNECTED MINERAL FIBER MINERAL ELEMENTS.

Country Status (12)

Country Link
EP (1) EP0560878B1 (en)
AT (1) ATE113087T1 (en)
AU (1) AU9080591A (en)
CA (1) CA2095532C (en)
CZ (1) CZ282594B6 (en)
DE (1) DE69104730T2 (en)
DK (1) DK165926B (en)
ES (1) ES2062884T3 (en)
FI (1) FI112953B (en)
PL (1) PL168628B1 (en)
SK (1) SK282244B6 (en)
WO (1) WO1992010602A1 (en)

Families Citing this family (53)

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DE4230356C2 (en) * 1992-09-10 1998-02-12 Heraklith Holding Ag Method and device for producing an insulation board from fibrous materials with low bulk density, and insulation board produced therewith
DK3793D0 (en) * 1993-01-14 1993-01-14 Rockwool Int A METHOD OF PRODUCING A MINERAL FIBER INSULATING WEB A PLANT FOR PRODUCING A MINERAL WEB, AND A MINERAL FIBER INSULATED PLATE
DK3693D0 (en) * 1993-01-14 1993-01-14 Rockwool Int A METHOD OF PRODUCING A MINERAL FIBER INSULATING WEB, A PLANT FOR PRODUCING A MINERAL FIBER WEB, AND A MINERAL FIBER INSULATED PLATE
DK3593D0 (en) * 1993-01-14 1993-01-14 Rockwool Int A METHOD FOR PRODUCING A MINERAL FIBER INSULATING WEB, A PLANT FOR PRODUCING A MINERAL FIBER INSULATING WEB, AND A MINERAL FIBER INSULATED PLATE
DE4309990A1 (en) * 1993-03-30 1994-10-06 Malimo Maschinenbau Process for the production of a large-volume nonwoven having surfaces consolidated on both sides
US5318644A (en) * 1993-06-02 1994-06-07 Owens-Corning Fiberglas Technology Inc. Method and apparatus for making an insulation assembly
FR2709919A1 (en) * 1993-08-10 1995-03-24 Saint Gobain Isover Subsoil for growing above ground
HU220483B1 (en) * 1994-01-28 2002-02-28 Rockwool International A/S Method and plant for producing mineral fiber web, mineral fiber plate, method for packaging mineral fiber plate, package, method for producing a tubular insulating element, tubular insulating element
FI941072A7 (en) * 1994-03-07 1995-09-08 Nokia Mobile Phones Ltd Data transmission method, transmitter and receiver
CN1058307C (en) * 1994-05-10 2000-11-08 欧文斯科尔宁格公司 Direct forming method of collecting long wool fibers
EP0833992B1 (en) * 1995-06-20 2003-08-13 Rockwool International A/S A method of producing an annular insulating mineral fiber covering
CH691816A5 (en) * 1996-03-25 2001-10-31 Flumroc Ag Process and apparatus for producing mineral fibreboard
ATE209715T1 (en) * 1996-03-25 2001-12-15 Rockwool Int METHOD AND DEVICE FOR PRODUCING A MINERAL FIBER BOARD
CZ302598A3 (en) * 1996-03-25 1999-09-15 Rockwool International A/S Process and apparatus for producing mineral fibreboards
CH692114A5 (en) * 1996-09-02 2002-02-15 Flumroc Ag Process and apparatus for producing mineral fibreboard
CH691960A5 (en) * 1996-09-02 2001-12-14 Flumroc Ag Process and apparatus for producing mineral fibreboard
AU7926398A (en) 1997-06-13 1998-12-30 Rockwool Limited Fire stops for use in buildings
GB9717484D0 (en) 1997-08-18 1997-10-22 Rockwool Int Roof and wall cladding
EP1064437B2 (en) † 1998-03-19 2008-12-24 Rockwool International A/S Process and apparatus for preparation of a mineral fibre product.
DE19830066B4 (en) * 1998-06-30 2010-01-14 Gessner, Dieter insulating element
ATE391700T1 (en) * 1999-09-28 2008-04-15 Rockwool Int FIBERGLASS ROLL AND PROCESS OF PRODUCTION OF ROLL AND FIBERGLASS WEB
EP1106743B1 (en) * 1999-12-08 2005-04-06 Deutsche Rockwool Mineralwoll GmbH & Co. OHG Process and device for manufacturing a fibrous insulation web
DE10013644A1 (en) * 2000-03-18 2001-09-27 Oesterr Heraklith Gmbh Method and device for producing a mineral fiber mat
DE10041481B4 (en) * 2000-08-24 2006-01-19 Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg Insulating element and method and apparatus for producing an insulating element, in particular a rolling and / or windable insulation web of mineral fibers
DE60124127T2 (en) * 2000-09-28 2007-09-06 Rockwool International A/S FIBER NONWOVEN
FI20012607L (en) * 2001-12-31 2003-07-01 Paroc Group Oy Ab Method and apparatus for producing fiber-oriented mineral wool mat
EP1709132B2 (en) † 2004-01-19 2015-04-29 Rockwool International A/S Process for manufacturing panels of mineral wool
ATE368142T1 (en) * 2004-01-21 2007-08-15 Rockwool Mineralwolle METHOD AND DEVICE FOR PRODUCING MESH OR PLATE-SHAPED INSULATING MATERIALS FROM MINERAL FIBERS
US20070264465A1 (en) * 2004-01-31 2007-11-15 Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg Method for the Production of a Web of Insulating Material Made of Mineral Fibres and Web of Insulating Material
ATE368155T1 (en) * 2004-01-31 2007-08-15 Rockwool Mineralwolle METHOD FOR PRODUCING AN INSULATION ELEMENT AND INSULATION ELEMENT
CN1957147B (en) 2004-04-02 2011-03-30 罗克伍尔国际公司 Acoustic components and their production
WO2008155401A1 (en) * 2007-06-20 2008-12-24 Rockwool International A/S Mineral fibre product
RU2352457C1 (en) * 2008-01-09 2009-04-20 Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" Method for production of mineral wool products
RU2362672C1 (en) * 2008-01-09 2009-07-27 Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" Method for production of mineral wool boards
RU2362673C1 (en) * 2008-01-31 2009-07-27 Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" Method for production of mineral wool products
RU2356729C1 (en) * 2008-02-04 2009-05-27 Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" Method for production of mineral wool products with combined structure
RU2364503C1 (en) * 2008-02-04 2009-08-20 Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" Method for production of multi-layer mineral wool items
RU2353513C1 (en) * 2008-02-04 2009-04-27 Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" Method of production of multilayered mineral-cotton items
EP2100992A1 (en) * 2008-03-12 2009-09-16 Paroc Oy Ab Method and arrangement for improving the runnability of a continuous mineral fibre web
RU2368496C1 (en) * 2008-05-04 2009-09-27 Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" Method of producing mineral wool products
RU2372191C1 (en) * 2008-05-04 2009-11-10 Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" Method for production of mineral wool strips and boards
FI20096094A7 (en) * 2009-10-23 2011-04-24 Finnfoam Oy Method for manufacturing an insulating board and an insulating board
FI20105564A0 (en) 2010-05-21 2010-05-21 Saint Gobain Rakennustuotteet Insulation piece, insulating method and insulating packaging
EP3848489B1 (en) 2011-09-30 2024-09-04 Owens Corning Intellectual Capital, LLC Method of forming a web from fibrous materials
RU2506158C1 (en) * 2012-05-29 2014-02-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" (национальный исследовательский университет) (ФГБОУ ВПО "ЮУрГУ" (НИУ)) Method of making mineral wool article
PL2931955T3 (en) * 2012-12-11 2017-04-28 Rockwool International A/S A method of forming a cured mineral fibre product
SI3224395T1 (en) * 2014-11-24 2019-07-31 Rockwool International A/S A method of producing a sandwich panel core of mineral wool fibres
PL412081A1 (en) 2015-04-21 2016-10-24 Tabor Aneta Tomisol Insulation lamella mat and the production line for manufacturing insulation lamella mat
SI3455425T1 (en) 2016-05-13 2021-11-30 Rockwool International A/S Method of providing insulation to a structure
FR3052762B1 (en) 2016-06-17 2020-09-25 Saint Gobain Isover INSTALLATION FOR TREATMENT OF A MATTRESS OF MINERAL FIBERS BY DETECTION AND EVACUATION OF LOCATED FAULTS, AND CORRESPONDING PROCEDURE
EP3276064B1 (en) 2016-07-27 2020-09-02 Technische Universität Dresden Sandwich core comprising a fibre material and method for its preparation and sandwich panel
PL3621934T3 (en) 2017-05-11 2023-04-24 Rockwool A/S A fire-protecting insulation product and use of such product
EP3628481B1 (en) 2018-09-27 2021-11-03 Rockwool International A/S A sandwich panel

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US3493452A (en) * 1965-05-17 1970-02-03 Du Pont Apparatus and continuous process for producing fibrous sheet structures
BE795596A (en) * 1972-02-17 1973-06-18 Rockwool Ab METHOD AND SYSTEM FOR MANUFACTURING A MINERAL WOOL LAMINATE PRODUCT AND FOR MAKING IT COHERENT
SE441764B (en) * 1982-10-11 1985-11-04 Gullfiber Ab Insulation sheet and method of producing similar
CA1209893A (en) * 1983-10-24 1986-08-19 Neil M. Cameron Reoriented glass fiber board product and method and apparatus for making same
DE3501897A1 (en) * 1985-01-22 1986-07-24 Bayer Ag, 5090 Leverkusen Process for producing a multi-layer fibre mat

Also Published As

Publication number Publication date
CZ282594B6 (en) 1997-08-13
EP0560878A1 (en) 1993-09-22
FI932566A7 (en) 1993-06-04
EP0560878B1 (en) 1994-10-19
DE69104730T2 (en) 1995-05-04
CA2095532C (en) 2000-11-07
SK56293A3 (en) 1994-05-11
DK291590A (en) 1992-06-17
DK291590D0 (en) 1990-12-07
DE69104730D1 (en) 1994-11-24
CA2095532A1 (en) 1992-06-08
PL168628B1 (en) 1996-03-29
DK165926B (en) 1993-02-08
FI112953B (en) 2004-02-13
SK282244B6 (en) 2001-12-03
ATE113087T1 (en) 1994-11-15
WO1992010602A1 (en) 1992-06-25
AU9080591A (en) 1992-07-08
CZ106793A3 (en) 1993-11-17
FI932566A0 (en) 1993-06-04

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