CA2032587C - Data carrier having a liquid crystal security element - Google Patents

Data carrier having a liquid crystal security element

Info

Publication number
CA2032587C
CA2032587C CA002032587A CA2032587A CA2032587C CA 2032587 C CA2032587 C CA 2032587C CA 002032587 A CA002032587 A CA 002032587A CA 2032587 A CA2032587 A CA 2032587A CA 2032587 C CA2032587 C CA 2032587C
Authority
CA
Canada
Prior art keywords
liquid crystal
data carrier
security element
carrier
film
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 - Fee Related
Application number
CA002032587A
Other languages
English (en)
French (fr)
Other versions
CA2032587A1 (en
Inventor
Christoph Heckenkamp
Gerhard Schwenk
Jurgen Moll
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.)
GAO Gesellschaft fuer Automation und Organisation mbH
Original Assignee
GAO Gesellschaft fuer Automation und Organisation mbH
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=6396250&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2032587(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by GAO Gesellschaft fuer Automation und Organisation mbH filed Critical GAO Gesellschaft fuer Automation und Organisation mbH
Publication of CA2032587A1 publication Critical patent/CA2032587A1/en
Application granted granted Critical
Publication of CA2032587C publication Critical patent/CA2032587C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/364—Liquid crystals
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/086—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/355—Security threads
    • B42D2033/26—

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Credit Cards Or The Like (AREA)
  • Liquid Crystal (AREA)
  • Laminated Bodies (AREA)
  • Burglar Alarm Systems (AREA)
CA002032587A 1989-12-22 1990-12-18 Data carrier having a liquid crystal security element Expired - Fee Related CA2032587C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3942663A DE3942663A1 (de) 1989-12-22 1989-12-22 Datentraeger mit einem fluessigkristall-sicherheitselement
DEP3942663.7 1989-12-22

Publications (2)

Publication Number Publication Date
CA2032587A1 CA2032587A1 (en) 1991-06-23
CA2032587C true CA2032587C (en) 1996-07-09

Family

ID=6396250

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002032587A Expired - Fee Related CA2032587C (en) 1989-12-22 1990-12-18 Data carrier having a liquid crystal security element

Country Status (6)

Country Link
EP (1) EP0435029B2 (de)
JP (1) JP3244278B2 (de)
AT (1) ATE126135T1 (de)
CA (1) CA2032587C (de)
DE (2) DE3942663A1 (de)
ES (1) ES2075871T5 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7488002B2 (en) 1998-07-02 2009-02-10 Securency Pty Limited Security and/or value document
WO2017137719A1 (en) * 2016-02-11 2017-08-17 De La Rue International Limited Improvements in secuirty devices

Families Citing this family (104)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5766738A (en) * 1979-12-28 1998-06-16 Flex Products, Inc. Paired optically variable article with paired optically variable structures and ink, paint and foil incorporating the same and method
GB9025390D0 (en) * 1990-11-22 1991-01-09 De La Rue Thomas & Co Ltd Security device
GB9106128D0 (en) * 1991-03-22 1991-05-08 Amblehurst Ltd Article
GB2268906A (en) * 1992-07-24 1994-01-26 Portals Ltd Counterfeit protection for documents using optical effects of liquid crystal
FR2698390B1 (fr) * 1992-11-20 1994-12-23 Arjo Wiggins Sa Document de sécurité authentifiable par effet piezooptique.
GB2276883A (en) * 1993-04-05 1994-10-12 Central Research Lab Ltd Optical material containing a liquid crystal
GB2283455B (en) * 1993-11-03 1997-01-15 Willett Int Ltd Method for authenticating or confirming the integrity of a document or other ing and articles for use in the method
US5629055A (en) * 1994-02-14 1997-05-13 Pulp And Paper Research Institute Of Canada Solidified liquid crystals of cellulose with optically variable properties
DE4416191A1 (de) * 1994-05-06 1995-11-09 Consortium Elektrochem Ind Interferenzpigmente aus in cholesterischer Anordnung fixierten Molekülen sowie deren Verwendung
DE59509361D1 (de) * 1994-06-24 2001-08-02 Rolic Ag Zug Optisches Bauelement
US5903330A (en) * 1995-10-31 1999-05-11 Rolic Ag Optical component with plural orientation layers on the same substrate wherein the surfaces of the orientation layers have different patterns and direction
KR20000029828A (ko) 1996-08-05 2000-05-25 마츠시타 덴끼 산교 가부시키가이샤 데이터송신장치,데이터수신장치,처리장치,기기관리장치,기기관리시스템,데이터송수신시스템및매체
DE19639229A1 (de) * 1996-09-24 1997-06-05 Wacker Chemie Gmbh Zusammensetzung enthaltend Pigmente mit vom Betrachtungswinkel abhängiger Farbigkeit
AUPO289296A0 (en) * 1996-10-10 1996-10-31 Securency Pty Ltd Self-verifying security documents
DE19645084A1 (de) * 1996-11-01 1998-05-07 Austria Card Gmbh Identifikationskarte mit zusätzlichen Sicherheitsmerkmalen und Verfahren zu deren Herstellung
FR2764314A1 (fr) * 1997-06-09 1998-12-11 Arjo Wiggins Sa Document de securite comportant un moyen d'authentification comprenant une fenetre transparente et un element de securite
DE69832574T2 (de) * 1997-07-29 2006-06-14 Nhk Spring Co Ltd Optisches Identifizierungssystem mit cholesterischen Flüssigkristallen
DE19735628C2 (de) * 1997-08-18 1999-10-14 Johannes Puff Verfahren zur Fälschungssicherung eines nicht personengebundenen Zugangsberechtigungsmittels
DE19737618A1 (de) 1997-08-28 1999-03-04 Consortium Elektrochem Ind Maschinendetektierbare Sicherheitsmarkierung mit erhöhter Fälschungssicherheit, Herstellung der Sicherheitsmarkierung und Sicherheitssystem umfassend diese Sicherheitsmarkierung
DE19737612A1 (de) * 1997-08-28 1999-03-04 Consortium Elektrochem Ind Mit dem Auge nicht erkennbare, maschinendetektierbare Sicherheitsmarkierung, Herstellung der Sicherheitsmarkierung und Sicherheitssystem umfassend diese Sicherheitsmarkierung
DE19743722A1 (de) * 1997-10-02 1999-04-08 Wacker Chemie Gmbh Polysiloxane mit heterocyclischen Funktionen, deren Herstellung und Verwendung
DE19833746A1 (de) * 1998-07-27 2000-02-03 Joergen Brosow Sicherheitspapier und Verfahren zur Prüfung der Echtheit darauf aufgezeichneter Urkunden
JP4336008B2 (ja) 1998-11-17 2009-09-30 日本発條株式会社 対象物の識別構造及び識別方法
DE19904282C2 (de) * 1999-02-03 2002-05-29 Xetos Ag Informationsträger
DE19907697A1 (de) * 1999-02-23 2000-08-24 Giesecke & Devrient Gmbh Wertdokument
DE19909471A1 (de) * 1999-03-04 2000-09-07 Bayerische Motoren Werke Ag Dekorelement
DE50002540D1 (de) † 1999-04-07 2003-07-17 Trueb Ag Aarau Aufzeichnungsträger und verfahren zu seiner herstellung
CN1235069C (zh) 1999-04-21 2006-01-04 日石三菱株式会社 光学叠层板,偏振衍射元件,补偿元件,装饰元件和防伪元件
CN1608217A (zh) * 1999-05-24 2005-04-20 凸版印刷株式会社 叠层复合体、信息记录媒体和防伪性赋予部件
DE19941295A1 (de) † 1999-08-31 2001-03-01 Giesecke & Devrient Gmbh Sicherheitselement
JP2001091719A (ja) * 1999-09-27 2001-04-06 Nippon Mitsubishi Oil Corp 光学素子およびセキュリティ素子
DE10007916A1 (de) † 2000-02-21 2001-08-23 Giesecke & Devrient Gmbh Mehrschichtige, laminierte Karte mit eingelagertem, Reliefstrukturen aufweisenden Sicherheitselement
DE10008851A1 (de) † 2000-02-25 2001-08-30 Giesecke & Devrient Gmbh Verfahren zur Herstellung laserbeschriftbarer Datenträger und damit hergestellte Datenträger
JP2002040252A (ja) * 2000-07-27 2002-02-06 Shiseido Co Ltd コレステリック液晶層を含む光学シート、それを用いた情報記録体、情報記録方法並びに情報判別方法
GB0025096D0 (en) * 2000-10-13 2000-11-29 Bank Of England Detection of printing and coating media
JP2002127647A (ja) * 2000-10-19 2002-05-08 Nhk Spring Co Ltd 対象物の識別媒体及びその製造方法
JP4565591B2 (ja) * 2000-11-29 2010-10-20 トッパン・フォームズ株式会社 コレステリック液晶性化合物を保持したカード
EP1227347A1 (de) * 2001-01-29 2002-07-31 Rolic AG Optische Vorrichtung und Verfahren zu deren Herstellung
CA2445080A1 (en) * 2001-04-24 2002-10-31 Merck Patent Gesellschaft Mit Beschraenkter Haftung Birefringent marking
JP2003161835A (ja) 2001-07-02 2003-06-06 Merck Patent Gmbh 光学可変マーキング
EP1281538A3 (de) 2001-07-02 2004-01-28 MERCK PATENT GmbH Optisch variable Markierung
GB0201767D0 (en) 2002-01-25 2002-03-13 Rue De Int Ltd Improvements in methods of manufacturing substrates
JP2003231380A (ja) 2002-02-12 2003-08-19 Nhk Spring Co Ltd 対象物の識別媒体及び識別方法
JP2003337218A (ja) * 2002-05-21 2003-11-28 Nippon Oil Corp 転写用積層体
DE10222433A1 (de) * 2002-05-22 2003-12-11 Kurz Leonhard Fa Streifenförmiges Sicherheitselement
US7590239B2 (en) 2002-09-13 2009-09-15 Nhk Spring Co., Ltd. Object identifying medium using multi-layer thin-film
DE10243650A1 (de) 2002-09-19 2004-04-01 Giesecke & Devrient Gmbh Sicherheitselement
JP2004133152A (ja) * 2002-10-10 2004-04-30 Nippon Oil Corp 転写性液晶積層体
US7386125B2 (en) 2002-10-28 2008-06-10 Qdesign Usa, Inc. Techniques of imperceptibly altering the spectrum of a displayed image in a manner that discourages copying
CN101817269B (zh) 2003-07-14 2012-01-18 Jds尤尼费斯公司 光学可变装置
DE10331798B4 (de) * 2003-07-14 2012-06-21 Giesecke & Devrient Gmbh Sicherheitselement, Wertgegenstand, Transfermaterial und Herstellungsverfahren
DE10342674B4 (de) * 2003-09-16 2007-07-19 Leonhard Kurz Gmbh & Co. Kg Verfahren und Foliensystem zur Herstellung eines individualisierten optisch variablen Elements
AT501320B1 (de) * 2003-09-17 2008-10-15 Hueck Folien Gmbh Passives aktivierbares sicherheitsmerkmal
DE10343547A1 (de) 2003-09-19 2005-04-14 Giesecke & Devrient Gmbh Sicherheitselement
JP4257903B2 (ja) 2003-10-28 2009-04-30 日本発條株式会社 識別媒体、識別媒体の識別方法、識別対象物品および識別装置
US20070224341A1 (en) * 2003-11-21 2007-09-27 Matthias Kuntz Method for the Modification of Chiral Liquid-Crystal Films with the Aid of Extractants
US7818782B2 (en) * 2004-04-14 2010-10-19 Dai Nippon Printing Co., Ltd. Authentication medium, authenticable substrate, authentication medium label, authentication medium transfer sheet, authenticable sheet, and authenticable information recording medium
DE102004018702B4 (de) * 2004-04-17 2006-05-24 Leonhard Kurz Gmbh & Co. Kg Folie mit Polymerschicht
DE102004021248A1 (de) 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004021246A1 (de) 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004021247A1 (de) 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102004039355A1 (de) 2004-08-12 2006-02-23 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
WO2005108108A2 (de) 2004-04-30 2005-11-17 Giesecke & Devrient Gmbh Sicherheitselement und verfahren zu seiner herstellung
EP1744904B2 (de) 2004-04-30 2019-11-06 Giesecke+Devrient Currency Technology GmbH Folienmaterial und verfahren zu seiner herstellung
GB0412979D0 (en) 2004-06-10 2004-07-14 Rue De Int Ltd Improvements in security devices
JP4549119B2 (ja) 2004-07-15 2010-09-22 日本発條株式会社 識別媒体および識別媒体を備えた物品
GB0419157D0 (en) 2004-08-27 2004-09-29 Rue De Int Ltd A method of manufacturing a fibrous substrate incorporating an elongate element
JP4539909B2 (ja) 2004-10-01 2010-09-08 日本発條株式会社 識別媒体およびその識別方法
FR2877609B1 (fr) * 2004-11-08 2007-03-09 Arjowiggins Security Soc Par A Structure de securite et article incorporant une telle structure
CN100550085C (zh) * 2004-12-24 2009-10-14 日本发条株式会社 识别介质、具备识别介质的物品、识别方法和识别装置
DE102005017655B4 (de) 2005-04-15 2008-12-11 Polyic Gmbh & Co. Kg Mehrschichtiger Verbundkörper mit elektronischer Funktion
DE102005031448A1 (de) 2005-07-04 2007-01-11 Polyic Gmbh & Co. Kg Aktivierbare optische Schicht
DE102005035589A1 (de) 2005-07-29 2007-02-01 Polyic Gmbh & Co. Kg Verfahren zur Herstellung eines elektronischen Bauelements
DE102005044306A1 (de) 2005-09-16 2007-03-22 Polyic Gmbh & Co. Kg Elektronische Schaltung und Verfahren zur Herstellung einer solchen
DE102005052928A1 (de) 2005-11-03 2007-05-16 Giesecke & Devrient Gmbh Durchsichtssicherheitselement und Verfahren zu seiner Herstellung
JP2009516604A (ja) 2005-11-22 2009-04-23 メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフトング 転写要素を使用する、液晶フィルムの熱転写方法
GB0525888D0 (en) 2005-12-20 2006-02-01 Rue De Int Ltd Improvements in methods of manufacturing security substrates
JP5158921B2 (ja) 2005-12-28 2013-03-06 日本発條株式会社 識別媒体
DE102006015023A1 (de) 2006-03-31 2007-10-04 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
GB2438384B (en) * 2006-05-26 2008-10-29 Rue De Int Ltd Improvements in forming security devices
GB2438383B (en) 2006-05-26 2008-10-08 Rue De Int Ltd Improvements in substrates
GB0615919D0 (en) 2006-08-10 2006-09-20 Rue De Int Ltd Photonic crystal security device
GB0615921D0 (en) 2006-08-10 2006-09-20 Rue De Int Ltd Photonic crystal security device
CA2598007A1 (en) 2006-08-29 2008-02-29 Jds Uniphase Corporation Printed article with special effect coating
JP4900790B2 (ja) 2006-09-01 2012-03-21 日本発條株式会社 識別媒体、物品、識別装置および識別媒体の識別方法
GB2442711B (en) 2006-10-10 2011-04-13 Rue De Int Ltd Improvements in security devices
JP4959304B2 (ja) 2006-11-22 2012-06-20 日本発條株式会社 識別媒体、識別方法および識別装置
DE102007022437A1 (de) * 2007-05-10 2008-11-13 Leonhard Kurz Gmbh & Co. Kg Verfahren zur Herstellung einer vernetzen Flüssigkristallschicht sowie Vorrichtung zur Durchführung des Verfahrens
DE102007023560B4 (de) 2007-05-21 2009-02-05 Ovd Kinegram Ag Mehrschichtkörper
DE102007034716A1 (de) 2007-07-23 2009-01-29 Giesecke & Devrient Gmbh Sicherheitselement
GB0720550D0 (en) 2007-10-19 2007-11-28 Rue De Int Ltd Photonic crystal security device multiple optical effects
GB2457911B (en) 2008-02-27 2010-05-12 Rue De Int Ltd Improved method for producing an optically varible security device
DE102008026216B4 (de) 2008-05-30 2010-07-29 Polyic Gmbh & Co. Kg Elektronische Schaltung
FR2933428B1 (fr) * 2008-07-03 2010-08-27 Arjowiggins Licensing Sas Element de securite a effet optique variable et feuille ou document de securite ou article le comprenant
DE102008061608A1 (de) 2008-12-11 2010-06-17 Giesecke & Devrient Gmbh Sicherheitselement
DE102009016533A1 (de) * 2009-04-06 2010-10-07 Giesecke & Devrient Gmbh Piezochromes Sicherheitselement auf Flüssigkristallbasis
GB0906366D0 (en) 2009-04-14 2009-05-20 Rue De Int Ltd Security device
GB2474903B (en) 2009-10-30 2012-02-01 Rue De Int Ltd Improvements in security devices
GB2476228B (en) 2009-11-19 2012-02-01 Rue De Int Ltd Improvements in security devices
DE102012003601A1 (de) 2012-02-21 2013-08-22 Giesecke & Devrient Gmbh Druckverfahren mit Passer zwischen Druck und Wasserzeichen
CN102759441A (zh) * 2012-07-20 2012-10-31 西北工业大学 多波段偏振成像防伪元件辨识系统
IN2014MU03621A (de) 2013-11-18 2015-10-09 Jds Uniphase Corp
DE102015004072A1 (de) 2015-03-30 2016-10-06 Giesecke & Devrient Gmbh Mehrfarbiges Sicherheitselement mit Effektfarben
EP3959081A1 (de) * 2019-04-20 2022-03-02 Arrow Greentech Ltd Robuster farbverschiebungssicherheitsfilm mit komplexen spektralwerten mit breitem spektrum und daraus hergestellter sicherheitsfaden

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU488652B2 (en) * 1973-09-26 1976-04-01 Commonwealth Scientific And Industrial Research Organisation Improvements in or relating to security tokens
AU547881B2 (en) * 1981-01-08 1985-11-07 Securicard Systems Ltd. Identification of articles
DE3110048A1 (de) * 1981-03-16 1982-09-30 Consortium für elektrochemische Industrie GmbH, 8000 München "fluessigkristalline phasen aufweisende zusammensetzungen auf basis cyclischer organopolysiloxane, ihre herstellung und deren verwendung"
DE3119459A1 (de) * 1981-05-15 1982-12-09 Consortium für elektrochemische Industrie GmbH, 8000 München Fluessig-kristalline eigenschaften aufweisende, vernetzte organopolysiloxane
CH653161A5 (de) * 1981-10-27 1985-12-13 Landis & Gyr Ag Dokument mit einem sicherheitsmerkmal und verfahren zur echtheitspruefung des dokumentes.
JPS5988780A (ja) * 1982-11-08 1984-05-22 アメリカン・バンク・ノ−ト・カムパニ− 光回折記録体及び光回折パタ−ンを作る方法
DE3331515A1 (de) * 1983-09-01 1985-03-21 Merck Patent Gmbh, 6100 Darmstadt Trialkanoyloxysilane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7488002B2 (en) 1998-07-02 2009-02-10 Securency Pty Limited Security and/or value document
WO2017137719A1 (en) * 2016-02-11 2017-08-17 De La Rue International Limited Improvements in secuirty devices

Also Published As

Publication number Publication date
EP0435029B1 (de) 1995-08-09
EP0435029A2 (de) 1991-07-03
ES2075871T3 (es) 1995-10-16
JPH04144796A (ja) 1992-05-19
EP0435029B2 (de) 2003-01-02
DE3942663A1 (de) 1991-06-27
DE59009504D1 (de) 1995-09-14
ES2075871T5 (es) 2003-07-16
EP0435029A3 (en) 1991-09-18
ATE126135T1 (de) 1995-08-15
CA2032587A1 (en) 1991-06-23
JP3244278B2 (ja) 2002-01-07

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