[go: up one dir, main page]

DE59009504D1 - Data carrier with a liquid crystal security element. - Google Patents

Data carrier with a liquid crystal security element.

Info

Publication number
DE59009504D1
DE59009504D1 DE59009504T DE59009504T DE59009504D1 DE 59009504 D1 DE59009504 D1 DE 59009504D1 DE 59009504 T DE59009504 T DE 59009504T DE 59009504 T DE59009504 T DE 59009504T DE 59009504 D1 DE59009504 D1 DE 59009504D1
Authority
DE
Germany
Prior art keywords
liquid crystal
security
security element
data carrier
plastic
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
DE59009504T
Other languages
German (de)
Inventor
Christoph Heckenkamp
Gerhard Schwenk
Juergen 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=DE59009504(D1) "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
Application granted granted Critical
Publication of DE59009504D1 publication Critical patent/DE59009504D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D2033/26—

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)
  • Liquid Crystal (AREA)
  • Laminated Bodies (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

Data carriers protected against forgery attempts using colour copiers, such as an identity card or a security, which include an optically variable security element of a liquid crystal material. This security element, such as for example a security thread, has a layer similar to plastic of a liquid crystal polymer, which exhibits a pronounced iridescence at room temperature. The plastic-like properties of the liquid crystal polymers permit easy processing to form a semi-finished or finished product, so that very diverse types of security elements can be produced. <IMAGE>
DE59009504T 1989-12-22 1990-12-05 Data carrier with a liquid crystal security element. Expired - Lifetime DE59009504D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3942663A DE3942663A1 (en) 1989-12-22 1989-12-22 DATA CARRIER WITH A LIQUID CRYSTAL SECURITY ELEMENT

Publications (1)

Publication Number Publication Date
DE59009504D1 true DE59009504D1 (en) 1995-09-14

Family

ID=6396250

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3942663A Withdrawn DE3942663A1 (en) 1989-12-22 1989-12-22 DATA CARRIER WITH A LIQUID CRYSTAL SECURITY ELEMENT
DE59009504T Expired - Lifetime DE59009504D1 (en) 1989-12-22 1990-12-05 Data carrier with a liquid crystal security element.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE3942663A Withdrawn DE3942663A1 (en) 1989-12-22 1989-12-22 DATA CARRIER WITH A LIQUID CRYSTAL SECURITY ELEMENT

Country Status (6)

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

Families Citing this family (113)

* 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 (en) * 1992-11-20 1994-12-23 Arjo Wiggins Sa Security document authenticated by piezooptic effect.
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 (en) * 1994-05-06 1995-11-09 Consortium Elektrochem Ind Interference pigments from molecules fixed in a cholesteric arrangement and their use
EP0689065B1 (en) 1994-06-24 2001-06-27 Rolic AG Optical component
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
DE19544130A1 (en) * 1995-11-27 1997-05-28 Giesecke & Devrient Gmbh Data carrier with optically variable color
US6532269B2 (en) 1996-08-05 2003-03-11 Matsushita Electric Industrial Co., Ltd. Data transmitter, data receiver, processor, equipment managing device, equipment managing system, data transmitting-receiving system, and medium
DE19639229A1 (en) * 1996-09-24 1997-06-05 Wacker Chemie Gmbh Composition with matrix containing pigment with angle-dependent colour in different matrix
AUPO289296A0 (en) 1996-10-10 1996-10-31 Securency Pty Ltd Self-verifying security documents
DE19645084A1 (en) * 1996-11-01 1998-05-07 Austria Card Gmbh Identification card with additional security features and processes for their production
FR2764314A1 (en) * 1997-06-09 1998-12-11 Arjo Wiggins Sa Security document with integrated authentication system
EP0911758B1 (en) * 1997-07-29 2005-11-30 Nhk Spring Co.Ltd. Optical identification system using cholesteric liquid crystals
DE19735628C2 (en) * 1997-08-18 1999-10-14 Johannes Puff Procedure to prevent counterfeiting of a non-personal means of access authorization
DE19737612A1 (en) 1997-08-28 1999-03-04 Consortium Elektrochem Ind Machine-detectable security marking, production of the security marking and security system that cannot be recognized by the eye and encompass this security marking
DE19737618A1 (en) 1997-08-28 1999-03-04 Consortium Elektrochem Ind Machine-detectable security marking with increased protection against forgery, production of the security marking and security system comprising this security marking
DE19743722A1 (en) * 1997-10-02 1999-04-08 Wacker Chemie Gmbh Polysiloxanes with heterocyclic functions, their production and use
RU2133200C1 (en) * 1997-12-15 1999-07-20 Закрытое акционерное общество "Промспецзнак" Article with aid to check authenticity
US20020117845A1 (en) 2000-01-03 2002-08-29 Bundesdruckerei Gmbh Security and/or valve document
DE19833746A1 (en) * 1998-07-27 2000-02-03 Joergen Brosow Security paper and method for checking authenticity of documents recorded on it protects securities like bank notes against forgery by using embedded electronic switching circuit
JP4336008B2 (en) 1998-11-17 2009-09-30 日本発條株式会社 Object identification structure and identification method
DE19904282C2 (en) * 1999-02-03 2002-05-29 Xetos Ag information carrier
DE19907697A1 (en) * 1999-02-23 2000-08-24 Giesecke & Devrient Gmbh Security element with optically variable material for documents of value additionally comprises at least one machine readable distinguishing material which does not impair the effect of the optically variable material
DE19909471A1 (en) * 1999-03-04 2000-09-07 Bayerische Motoren Werke Ag Decorative element
PL198387B1 (en) † 1999-04-07 2008-06-30 Trueb Ag Information carrier and method of making same
EP1203968B1 (en) 1999-04-21 2012-06-27 Nippon Mitsubishi Oil Corporation Production method for an optical laminate
ATE483590T1 (en) 1999-05-24 2010-10-15 Toppan Printing Co Ltd COMPOSITE COMPOSITE BODY, INFORMATION STORAGE MEDIUM AND DEVICE FOR APPLYING ANTI-COUNTERFEIT FEATURES
DE19941295A1 (en) † 1999-08-31 2001-03-01 Giesecke & Devrient Gmbh Security element
JP2001091719A (en) * 1999-09-27 2001-04-06 Nippon Mitsubishi Oil Corp Optical element and security element
DE10007916A1 (en) 2000-02-21 2001-08-23 Giesecke & Devrient Gmbh Multilayer laminated card with interposed security element having relief structures
DE10008851A1 (en) † 2000-02-25 2001-08-30 Giesecke & Devrient Gmbh Manufacturing laser-writeable data media involves applying transparent, optically variable layer then producing marking through optically variable layer by action of laser beam
JP2002040252A (en) * 2000-07-27 2002-02-06 Shiseido Co Ltd Optical sheet containing cholesteric liquid crystal layer, information recording body using the same, method for recording information and method for discriminating information
GB0025096D0 (en) * 2000-10-13 2000-11-29 Bank Of England Detection of printing and coating media
JP2002127647A (en) 2000-10-19 2002-05-08 Nhk Spring Co Ltd Object identification medium and method of manufacturing the same
JP4565591B2 (en) * 2000-11-29 2010-10-20 トッパン・フォームズ株式会社 Card holding cholesteric liquid crystalline compounds
EP1227347A1 (en) * 2001-01-29 2002-07-31 Rolic AG Optical device and method for manufacturing same
AU2002304051B2 (en) * 2001-04-24 2007-08-16 Merck Patent Gmbh Birefringent Marking
US7081282B2 (en) 2001-07-02 2006-07-25 Merck Patent Gmbh Optically variable marking
EP1281538A3 (en) 2001-07-02 2004-01-28 MERCK PATENT GmbH Optically variable marking
GB0201767D0 (en) 2002-01-25 2002-03-13 Rue De Int Ltd Improvements in methods of manufacturing substrates
JP2003231380A (en) 2002-02-12 2003-08-19 Nhk Spring Co Ltd Object identification medium and identification method
JP2003337218A (en) * 2002-05-21 2003-11-28 Nippon Oil Corp Transfer laminate
DE20220957U1 (en) 2002-05-22 2004-08-26 Leonhard Kurz Gmbh & Co. Kg Security strip for e.g. bank notes or credit cards, comprises transfer film with optically active layer or structure restricted to defined spaced apart surface regions
DE10233928A1 (en) * 2002-07-25 2004-02-12 Giesecke & Devrient Gmbh Method and device for checking the authenticity of a security element
WO2004024439A1 (en) 2002-09-13 2004-03-25 Nhk Spring Co., Ltd. Object identifying medium using multi-layer thin-film
DE10243650A1 (en) 2002-09-19 2004-04-01 Giesecke & Devrient Gmbh security element
JP2004133152A (en) * 2002-10-10 2004-04-30 Nippon Oil Corp Transferable liquid crystal laminate
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
US7916343B2 (en) * 2003-07-07 2011-03-29 Commonwealth Scientific And Industrial Research Organisation Method of encoding a latent image and article produced
CN1597334B (en) 2003-07-14 2011-03-30 Jds尤尼费斯公司 Security thread and method of fabricating an optically variable device on a sheet
DE10331798B4 (en) * 2003-07-14 2012-06-21 Giesecke & Devrient Gmbh Security element, valuable item, transfer material and manufacturing process
DE10342674B4 (en) * 2003-09-16 2007-07-19 Leonhard Kurz Gmbh & Co. Kg Method and film system for producing an individualized optically variable element
AT501320B1 (en) * 2003-09-17 2008-10-15 Hueck Folien Gmbh PASSIVE ACTIVE SAFETY FEATURE
DE10343547A1 (en) 2003-09-19 2005-04-14 Giesecke & Devrient Gmbh Object of value comprises a security element with at least one liquid crystal material which produces a linear light polarization and/or a dichroic effect with an orientation dependent refraction index
JP4257903B2 (en) 2003-10-28 2009-04-30 日本発條株式会社 Identification medium, identification medium identification method, identification target article, and identification apparatus
JP2007519941A (en) * 2003-11-21 2007-07-19 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 Method for modifying chiral liquid crystal membrane using extractant
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 (en) 2004-04-17 2006-05-24 Leonhard Kurz Gmbh & Co. Kg Film with polymer layer
US7808605B2 (en) 2004-04-30 2010-10-05 Giesecke & Devrient Gmbh Sheeting and methods for the production thereof
DE102004039355A1 (en) 2004-08-12 2006-02-23 Giesecke & Devrient Gmbh Security element and method for its production
DE102004021246A1 (en) 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Security element and method for its production
US20070211238A1 (en) 2004-04-30 2007-09-13 Giesecke & Devrient Gmbh Security Element and Methods for the Production Thereof
DE102004021247A1 (en) 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Security element and method for its production
DE102004021248A1 (en) 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Security element and method for its production
GB0412979D0 (en) 2004-06-10 2004-07-14 Rue De Int Ltd Improvements in security devices
JP4549119B2 (en) 2004-07-15 2010-09-22 日本発條株式会社 Identification medium and article provided with identification medium
GB0419157D0 (en) 2004-08-27 2004-09-29 Rue De Int Ltd A method of manufacturing a fibrous substrate incorporating an elongate element
JP4539909B2 (en) 2004-10-01 2010-09-08 日本発條株式会社 Identification medium and identification method thereof
FR2877609B1 (en) * 2004-11-08 2007-03-09 Arjowiggins Security Soc Par A SAFETY STRUCTURE AND ARTICLE INCORPORATING SUCH A STRUCTURE
JP4778445B2 (en) * 2004-12-24 2011-09-21 日本発條株式会社 Identification medium, article provided with identification medium, and identification method
DE102005017655B4 (en) 2005-04-15 2008-12-11 Polyic Gmbh & Co. Kg Multilayer composite body with electronic function
DE102005031448A1 (en) * 2005-07-04 2007-01-11 Polyic Gmbh & Co. Kg Activatable optical layer
DE102005035589A1 (en) 2005-07-29 2007-02-01 Polyic Gmbh & Co. Kg Manufacturing electronic component on surface of substrate where component has two overlapping function layers
DE102005044306A1 (en) 2005-09-16 2007-03-22 Polyic Gmbh & Co. Kg Electronic circuit and method for producing such
DE102005052928A1 (en) 2005-11-03 2007-05-16 Giesecke & Devrient Gmbh See-through security element and method for its manufacture
WO2007059853A1 (en) 2005-11-22 2007-05-31 Merck Patent Gmbh Process for a thermal transfer of a liquid crystal film using a transfer element
GB0525888D0 (en) 2005-12-20 2006-02-01 Rue De Int Ltd Improvements in methods of manufacturing security substrates
JP5158921B2 (en) 2005-12-28 2013-03-06 日本発條株式会社 Identification medium
DE102006015023A1 (en) 2006-03-31 2007-10-04 Giesecke & Devrient Gmbh Security element for security papers, value documents, has relief structure, which is formed on basis of cholesteric, liquid crystalline polymer material and top layer contains reflecting or high-refracting layer
GB2438383B (en) 2006-05-26 2008-10-08 Rue De Int Ltd Improvements in substrates
GB2438384B (en) * 2006-05-26 2008-10-29 Rue De Int Ltd Improvements in forming security devices
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 (en) 2006-09-01 2012-03-21 日本発條株式会社 Identification medium, article, identification device, and identification medium identification method
GB2442711B (en) 2006-10-10 2011-04-13 Rue De Int Ltd Improvements in security devices
JP4959304B2 (en) 2006-11-22 2012-06-20 日本発條株式会社 Identification medium, identification method, and identification apparatus
DE102007022437A1 (en) * 2007-05-10 2008-11-13 Leonhard Kurz Gmbh & Co. Kg Process for producing a crosslinked liquid-crystal layer and device for carrying out the process
DE102007023560B4 (en) 2007-05-21 2009-02-05 Ovd Kinegram Ag Multi-layer body
DE102007034716A1 (en) 2007-07-23 2009-01-29 Giesecke & Devrient Gmbh security element
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 (en) 2008-05-30 2010-07-29 Polyic Gmbh & Co. Kg Electronic switch
FR2933428B1 (en) * 2008-07-03 2010-08-27 Arjowiggins Licensing Sas SECURITY ELEMENT WITH VARIABLE OPTICAL EFFECT AND SHEET OR SECURITY DOCUMENT OR ARTICLE COMPRISING SAME
DE102008061608A1 (en) 2008-12-11 2010-06-17 Giesecke & Devrient Gmbh security element
DE102009016533A1 (en) * 2009-04-06 2010-10-07 Giesecke & Devrient Gmbh Piezochrome safety element based on liquid crystal
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 (en) 2012-02-21 2013-08-22 Giesecke & Devrient Gmbh Printing process with Passer between print and watermark
CN102759441A (en) * 2012-07-20 2012-10-31 西北工业大学 Multiband polarization imaging anti-counterfeiting element identification system
IN2014MU03621A (en) 2013-11-18 2015-10-09 Jds Uniphase Corp
DE102014018890A1 (en) 2014-12-17 2016-06-23 Giesecke & Devrient Gmbh Security element, method for producing the same and equipped with the security element disk
DE102015004072A1 (en) 2015-03-30 2016-10-06 Giesecke & Devrient Gmbh Multicolored security element with effect colors
GB2547236B (en) * 2016-02-11 2019-09-11 De La Rue Int Ltd Improvements in security devices
EP3959081A1 (en) * 2019-04-20 2022-03-02 Arrow Greentech Ltd Robust colour shift security film with wide spectrum complex spectral values and security thread made therefrom
JPWO2023032989A1 (en) * 2021-08-30 2023-03-09
DE102023118604A1 (en) * 2023-07-13 2025-01-16 Giesecke+Devrient Currency Technology Gmbh Value document and procedure for checking a value document

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
WO1982002445A1 (en) * 1981-01-08 1982-07-22 Lucy Ann Boutaleb Identification of articles
DE3110048A1 (en) * 1981-03-16 1982-09-30 Consortium für elektrochemische Industrie GmbH, 8000 München "COMPOSITIONS CONTAINING LIQUID CRYSTALLINE PHASES BASED ON CYCLIC ORGANOPOLYSILOXANS, THEIR PRODUCTION AND THEIR USE"
DE3119459A1 (en) * 1981-05-15 1982-12-09 Consortium für elektrochemische Industrie GmbH, 8000 München LIQUID-CRYSTALLINE PROPERTIES WITH CROSS-LINKED ORGANOPOLYSILOXANES
CH653161A5 (en) * 1981-10-27 1985-12-13 Landis & Gyr Ag DOCUMENT WITH A SECURITY CHARACTERISTIC AND METHOD FOR CHECKING THE DOCUMENT FOR AUTHENTICITY.
JPS5988780A (en) * 1982-11-08 1984-05-22 アメリカン・バンク・ノ−ト・カムパニ− Making of optical refraction recording body and optical refraction pattern
DE3331515A1 (en) * 1983-09-01 1985-03-21 Merck Patent Gmbh, 6100 Darmstadt TRIALKANOYLOXYSILANES

Also Published As

Publication number Publication date
JP3244278B2 (en) 2002-01-07
JPH04144796A (en) 1992-05-19
EP0435029A2 (en) 1991-07-03
EP0435029B2 (en) 2003-01-02
EP0435029A3 (en) 1991-09-18
EP0435029B1 (en) 1995-08-09
ES2075871T3 (en) 1995-10-16
CA2032587A1 (en) 1991-06-23
DE3942663A1 (en) 1991-06-27
ES2075871T5 (en) 2003-07-16
CA2032587C (en) 1996-07-09
ATE126135T1 (en) 1995-08-15

Similar Documents

Publication Publication Date Title
DE59009504D1 (en) Data carrier with a liquid crystal security element.
DE59210005D1 (en) Optical waveguide having a substantially planar substrate and use thereof
DE3268726D1 (en) Flat card of thermoplastic material with visually readable security marks, and process for manufacturing the same
BR9201209A (en) GRINDING COMPOSITION, WATER EMULSION, POLYMER COMPOSITION, PROCESS FOR GRINDING A POLYMER AND PROCESS FOR PREPARING AN OLIGOMERIC OR POLYMERIC MATERIAL
ES2048186T3 (en) SECURITY ELEMENT IN THE FORM OF A THREAD OR A BAND FOR ITS INCORPORATION IN SAFETY DOCUMENTS AND PROCEDURE FOR ITS MANUFACTURE.
DE3065602D1 (en) Melt processable anisotropic wholly aromatic polyester comprising 6-oxy-2-naphthoyl moieties, moulding compounds, moulded articles and films and fibres based thereon
ATE231245T1 (en) OPTICAL RESIN WITH REFRACTIVE INDEX DISTRIBUTION AND METHOD OF PRODUCTION THEREOF
BR9708450A (en) Photochromic composition and photochromic article.
DE69013287D1 (en) MANUFACTURING PROCESS FOR A TRANSPARENT POLYMER LENS WITH MODULATED BREAKING INDEX.
EP0067618A3 (en) Wholly aromatic polyester capable of forming an anisotropic melt phase at an advantageously reduced temperature
DE59409288D1 (en) Security paper with a thread or ribbon-shaped security element
DE68928567D1 (en) POROUS CRYSTALLIZED AROMATIC POLYCARBONATE PREPOLYMER, A POROUS CRYSTALLIZED AROMATIC POLYCARBONATE AND METHOD FOR PRODUCING THE SAME
DE59802411D1 (en) Machine-detectable security marking that cannot be seen with the eye, production of the security marking and security system comprising this security marking
DE69224987D1 (en) LIGHT-ABSORBING POLYMERS
MY101860A (en) Production of synthetic plastics articles
DE59506095D1 (en) Data carrier and method for its production
DE3786689D1 (en) OPTICAL PLASTIC TRANSMISSION MEDIUM, RELATED PRODUCTION PROCESS AND LENS ARRANGEMENT WITH SUCH A MEDIUM.
FR2668158B1 (en) CROSSLINKABLE POLYMER FOR NONLINEAR OPTICAL APPLICATIONS.
BR9101907A (en) COMPOSITION AND PROCESS FOR THE PREPARATION OF THE SAME
DE69023797D1 (en) Process for the production of oriented shaped articles from mixtures of para-aramid with thermally hardenable polymers.
ATE8356T1 (en) PROCESS FOR THE MANUFACTURE OF AN NON-FOBLISHABLE PHOTOGRAPHIC IDENTITY CARD AND IDENTITY CARD MANUFACTURED BY THIS PROCESS.
DE69113497D1 (en) Fluoroacrylate polymer with lubricating properties and thermoplastic resin composition containing them.
ATE174353T1 (en) ISOCYANATE-BASED THERMALLY REVERSIBLE POLYMERS
ES244922Y (en) GLASSES
DE3440653A1 (en) Method for making visible attempts to tamper with embossed plastic cards

Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings