EP1115949A1 - Papier de securite et autres articles de securite - Google Patents

Papier de securite et autres articles de securite

Info

Publication number
EP1115949A1
EP1115949A1 EP99942696A EP99942696A EP1115949A1 EP 1115949 A1 EP1115949 A1 EP 1115949A1 EP 99942696 A EP99942696 A EP 99942696A EP 99942696 A EP99942696 A EP 99942696A EP 1115949 A1 EP1115949 A1 EP 1115949A1
Authority
EP
European Patent Office
Prior art keywords
security
article according
security article
absorption
segment
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.)
Granted
Application number
EP99942696A
Other languages
German (de)
English (en)
Other versions
EP1115949B1 (fr
Inventor
Christoph Weder
Paul Smith
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.)
Landqart AG
Original Assignee
Landqart AG
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=4222583&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1115949(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Landqart AG filed Critical Landqart AG
Priority to EP02001228A priority Critical patent/EP1233106B1/fr
Publication of EP1115949A1 publication Critical patent/EP1115949A1/fr
Application granted granted Critical
Publication of EP1115949B1 publication Critical patent/EP1115949B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/21—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
    • 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
    • B42D25/378—Special inks
    • B42D25/391—Special inks absorbing or reflecting polarised light
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • G09F3/0292—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • G09F3/0294—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time where the change is not permanent, e.g. labels only readable under a special light, temperature indicating labels and the like
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00—Printed matter
    • Y10S283/901—Concealed data

Definitions

  • the present invention relates generally to security paper and security articles, ie articles whose counterfeiting is to be prevented or made more difficult by one or more security elements.
  • the present invention also relates to a method for producing such security articles and a method for using the same.
  • Strips which can consist, for example, of a plastic coated with metal, are widely used in security papers, in particular for use in banknotes and similar securities. If these security threads or strips are embedded in the security paper, for example, and this is then possibly printed on, these security elements cannot be easily recognized if the object is viewed in reflection. However, they appear as dark shadows when the object is illuminated and is thus observed in transmission.
  • the printed with different color surfaces are in this thread so small or so close together that they did not differ from the naked eye 'canrei and the viewer, therefore, appear as a single-color pattern.
  • the micro-printing and their different colors can be done with a magnifying glass or of a microscope.
  • Security element is described in GB 1, 095,286, the micro-printing claimed in that previously known patent specification consisting of characters and patterns.
  • No. 4,897,300 describes a security paper, for example, in which several security threads are embedded, which are printed with different, luminescent dyes. The latter are colorless or paper-colored in the unexcited state and therefore not or only barely visible to the viewer.
  • excitation for example by irradiation with ultraviolet (UV) light
  • UV light ultraviolet
  • characteristic mixed colors result from the overlapping of different colored security threads.
  • a security thread or strip made of plastic is thus integrated into the paper so that "windows" in the paper surface give a direct view of parts of the surface of the security element, such as Example described in GB 1, 552,853, GB 1, 604,463 or EP 0,059,056.
  • security elements which have at least one photoluminescent
  • Photoluminescence and / or linearly polarized absorption is characterized.
  • safety element refers to a
  • Example shaped object which can have different shapes, for example, but not only, fiber, thread, rod,
  • the security element can be homogeneous and continuous and can be structured or patterned and can contain several individual elements, zones or pixels.
  • security article refers to objects whose counterfeiting is to be prevented or made more difficult by one or more security elements or whose authenticity or validity is to be indicated by one or more security elements or which are to be identified by one or more security elements, for example, but not only , Banknotes, checks, shares, bonds, ID cards, passports, driving licenses, tickets, stamps, bank cards, credit cards.
  • security paper refers to security items that consist essentially of paper.
  • the polar axis of a linear polarizer or analyzer is the direction of the electric field vector of light which is transmitted through the polarizer or analyzer.
  • the axis of polarization of a segment or, if applicable, the security element of another object is the
  • a segment is a part of an object, in particular a security element, on which the characteristic degree of polarization and the axis of polarization for the emission and the absorption can be adequately determined.
  • the degree of polarization for the emission is expressed by the dichroic ratio in emission.
  • the dichroic ratio in emission is defined as the ratio of the integrated photoluminescence emission spectra measured, with unpolarized excitation, by a linear polarizer whose polar axis is arranged parallel and perpendicular to the polarization axis of the examined segment.
  • the degree of polarization for absorption is expressed in terms of absorption by the dichroic ratio.
  • the dichroic ratio in absorption is defined as the ratio of the absorptions measured at the excitation wavelength by a linear polarizer (analyzer) whose polar axis is arranged parallel and perpendicular to the polarization axis of the examined segment.
  • the excitation wavelength is defined as that
  • Dichroic properties of a film of 2% by weight EHO-OPPE / UHMW-PE with a stretching rate of 80 (referred to as material A in the examples below).
  • material A Dichroic properties of a film of 2% by weight EHO-OPPE / UHMW-PE with a stretching rate of 80 (referred to as material A in the examples below).
  • Polarized absorption spectra recorded for incident light which is polarized parallel (solid line) and perpendicular (dashed line) to the polarization axis of the film.
  • the present invention is based on our surprising discovery that security elements can be fabricated from photoluminescent materials which are characterized by linearly polarized photoluminescence or linearly polarized absorption or both and can be brought into a form according to the invention, which can be used for the production of security papers and security articles can be used generally.
  • security papers and security articles can be used generally.
  • such materials can be brought into a suitable form and used for the production of security elements from which security papers and security articles can be manufactured.
  • the security element can have a wide variety of shapes, for example, but not only, fiber, thread, rod, film, sheet, layer, tape, plate, disc, snippet and / or combinations thereof.
  • security elements in more complex forms for example, but not only, logos, letters, characters, numbers etc. can also be used.
  • the surface of the security element can also be structured, for example by printing or embossing. Essential characteristic of the
  • Security article is the fact that the security element has at least one photoluminescent segment which is characterized by a linearly polarized photoluminescence and / or linearly polarized absorption or that the security element has at least one segment which is characterized by a linearly polarized absorption.
  • Orientation of the polar axis of the polarizer (analyzer) and the polarization axis of the segment is absorbed to different extents, which can lead, for example, to a strong light / dark contrast when viewed by the naked eye (and of course by the polarizer). Of course, this effect can also be detected with suitable sensors.
  • the linearly polarized absorption of such segments leads to linearly polarized excitation light, which can be generated, for example, by an external light source in connection with a linear polarizer, depending on the orientation of the segment
  • a segment is a part of an object, in particular a security element, on which the characteristic degree of polarization for the emission and the absorption can be adequately determined. It is obvious to a person skilled in the art that the shape and size of this
  • Segments may differ from case to case and the
  • Security element for example, a uniaxially oriented film from Dimensions 5 cm x 5 cm x 2 ⁇ m made of material A (see example A)
  • the entire film can be viewed as a segment if the degree of polarization can be measured essentially anywhere and from this, within the scope of the measurement and production accuracy, essentially comparable results with respect to the degree of polarization but also the polarization axis are obtained.
  • a fiber shaped into a circle with a diameter of 0.5 mm and a length of 20 cm made of the same material must be considered as a combination of many segments, since the polarization axis determined from polarization measurements in this case has a strong location dependence.
  • this element also shows optical effects, analogous to those described above and in the sense of this invention, which can be described by a combination of individual segments.
  • the security elements in security articles according to the present invention suitably contain one or more luminescent dyes which cause the polarization properties according to the present invention.
  • Suitable luminescent dyes can be found, for example, in European patent applications 97111229.7 and 98101520.9 and in the publications and patents cited in these patent applications.
  • oligomers and polymers such as, for example, poly (2,5-dialkoxy-p-phenylene ethynylene) are derivatives, such as EHO-OPPE and O-PPE or poly (p-phenylene vinylene) ) Derivatives, such as (poly [2- methoxy-5- [2'-ethyl-hexyloxy] -p-phenylene vinylene] (MEH-PPV) very useful for preferred embodiments of the present
  • Suitable methods for the production of security elements for use according to the present invention can be found, for example, in European patent applications 9711 1229.7 and 98101520.9 and in the publications and patents cited in these patent applications.
  • the security elements or segments of such security elements for use in security articles according to the present invention can be produced, for example, by the anisotropic deformation of ductile " mixtures. It is readily apparent to the person skilled in the art that it is suitable for the
  • Security papers and other security articles according to the present invention are innumerable exemplary embodiments.
  • the idea of the present invention can in principle, but not only, be applied to all previously known security articles and security papers which have at least one security element that is comparable to that of the present invention, apart from, of course, the linearly polarized photoluminescence, absorption or both.
  • security papers can be produced in which one or more photoluminescent security threads or strips with properties according to the present invention are embedded. If several such security threads or strips are used, they can, according to a preferred embodiment of the present invention, also have different emission colors and can be inserted in certain patterns, for example in a special arrangement of the polarization axes.
  • the security elements can also be applied to a substrate, for example made of paper or plastic, for example by lamination.
  • the present invention the
  • Security elements in the form of fibers introduced into the substrate or applied to the substrate. Also in this one
  • the use of security elements with different emission colors can be advantageous the fibers can have a wide variety of shapes, for example stretched or curved fibers can be used, which according to the present invention can lead to different optical effects.
  • Ultra high molecular weight polyethylene (UHMW-PE, Hostalen Gur 412, weight average molecular weight ⁇ 4 10 6 gmol '1 , Hoechst AG) was used as the carrier polymer.
  • Xylene puriss. Pa, Fluka AG was used as the solvent. Characterization of security elements, segments and
  • Patent application 98101520.9 described by polarized
  • Photoluminescent materials with 1 or 2% by weight EHO-OPPE with M n of 10,000 gmol "1 as the luminescent dye and UHMW-PE as the carrier polymer were produced as described above (Ch. Weder et al., Adv. Mat, Vol. 9, pp. 1035-1039 (1997)) by pouring a solution containing the luminescent dye (5 or 10 mg) and UHMW-PE (0.5 g) in xylene (50 g) into a petri dish 11 cm in diameter the resulting gels were dried under ambient conditions for 24 hours and resulted in unoriented EHO-OPPE / UHMW-PE films with a thickness of approximately 70 ⁇ m, these films were different at temperatures of 90-120 ° C.
  • the strongly stretched samples from this example have a strongly polarized absorption and a strongly polarized emission, as shown in FIG. 1 for a film of 2% by weight EHO-OPPE with a stretching rate of 80.
  • This particular material (referred to as Material A in the examples below) has (measured at an excitation wavelength of 485 nm) a dichroic ratio in absorption of 57, a dichroic ratio in emission of 27 and a yellow-green emission color.
  • An analog film of 1% by weight MEH-PPV with a stretching rate of 80 (referred to as material B in the examples below), on the other hand (measured at an excitation wavelength of 510 nm) has a dichroic ratio in absorption of 21, a dichroic ratio in Emission of 27 and an orange-red emission color.
  • the influence of stretching rate, structure of the luminescent dye, composition of the material and excitation wavelength on the dichroic absorption and emission properties are summarized in FIG which security elements or segments of such security elements can be produced for use in security articles according to the present invention.
  • Example 1 An analog film of 1% by weight MEH-PPV with a stretching rate of 80 (referred to as material B in the examples below), on the other hand (measured at an excitation wavelength of 510 nm) has a dichroic ratio in absorption of 21, a dichroic ratio in Emission of 27 and an orange-red emission color.
  • a security paper was made by a strip
  • a paper (1) with the dimensions 17 cm x 7 cm was embedded in such a way that the polarization axis of the strip was oriented parallel to the short sides of the paper (FIG. 3a).
  • the paper (1) was printed (3) and the stripe (2) was neither clearly visible in normal daylight nor in normal room lighting, neither in reflection nor in transmission by the naked eye.
  • the green-yellow photoluminescence of the strip (2) could be recognized immediately by the naked eye when the security paper was irradiated with a UV lamp (Bioblock, VL-4LC, 4 watts).
  • Example 2 Example 1 was repeated, but a second was added
  • Example 3 Example 1 was repeated but instead of streaking
  • a security card was made by a 0.5 mm
  • Strip (7) can be seen.
  • Example 4 was repeated, but instead of an opaque card (6) made of yellow colored PVC, a transparent card made of polycarbonate (8) was used and in addition a second 0.5 mm wide and about 2 ⁇ m thick strip made of material B (9)

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Paper (AREA)
  • Burglar Alarm Systems (AREA)
  • Polarising Elements (AREA)
  • Facsimile Transmission Control (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

L'invention concerne un papier de sécurité et des articles de sécurité en général, contenant au moins un élément de sécurité qui présente au moins un segment photoluminescent caractérisé par une photoluminescence polarisée de manière linéaire et/ou une absorption également polarisée de manière linéaire. L'invention concerne en outre un procédé de production de tels articles de sécurité ainsi que leur utilisation.
EP99942696A 1998-09-25 1999-09-22 Papier de securite et autres articles de securite Revoked EP1115949B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02001228A EP1233106B1 (fr) 1998-09-25 1999-09-22 Papier de sécurité et autres articles de sécurité

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH195898 1998-09-25
CH195898 1998-09-25
PCT/CH1999/000450 WO2000019016A1 (fr) 1998-09-25 1999-09-22 Papier de securite et autres articles de securite

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP02001228.2 Division-Into 2002-01-17

Publications (2)

Publication Number Publication Date
EP1115949A1 true EP1115949A1 (fr) 2001-07-18
EP1115949B1 EP1115949B1 (fr) 2003-01-02

Family

ID=4222583

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02001228A Expired - Lifetime EP1233106B1 (fr) 1998-09-25 1999-09-22 Papier de sécurité et autres articles de sécurité
EP99942696A Revoked EP1115949B1 (fr) 1998-09-25 1999-09-22 Papier de securite et autres articles de securite

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP02001228A Expired - Lifetime EP1233106B1 (fr) 1998-09-25 1999-09-22 Papier de sécurité et autres articles de sécurité

Country Status (10)

Country Link
US (1) US7108286B1 (fr)
EP (2) EP1233106B1 (fr)
AT (2) ATE230455T1 (fr)
AU (1) AU754452B2 (fr)
BR (1) BR9914061A (fr)
CA (1) CA2344198C (fr)
DE (2) DE59903926D1 (fr)
ES (1) ES2190245T3 (fr)
PL (1) PL346760A1 (fr)
WO (1) WO2000019016A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1446528B1 (fr) * 2001-11-22 2006-04-26 Landqart Papier infalsifiable et articles infalsifiables
WO2003085608A2 (fr) * 2002-04-04 2003-10-16 Landqart Dispositif de verification de caracteristiques de securite
WO2003085609A2 (fr) * 2002-04-04 2003-10-16 Landqart Dispositif de verification de caracteristiques de securite
AU2003205497C1 (en) * 2002-07-19 2009-05-21 Landqart Security feature for value documents
GB0228303D0 (en) * 2002-12-04 2003-01-08 Rue De Int Ltd Security device and method
EP1452338A1 (fr) * 2003-02-28 2004-09-01 Eidgenössische Technische Hochschule (ETH) Caractéristiques de sécurité dichroiques à motifs
GB0307615D0 (en) * 2003-04-02 2003-05-07 Ucb Sa Authentication means
EP1479797A1 (fr) * 2003-05-22 2004-11-24 Landqart Fibre photoluminescente, papier fiduciaire et d'autres articles de sécurité
CH696744A5 (de) * 2003-07-07 2007-11-15 Landqart Sicherheitspapier und Verfahren zu dessen Herstellung.
DE10331798B4 (de) * 2003-07-14 2012-06-21 Giesecke & Devrient Gmbh Sicherheitselement, Wertgegenstand, Transfermaterial und Herstellungsverfahren
NL1026430C2 (nl) * 2004-06-16 2005-12-19 Vhp Ugchelen Bv Veiligheidspapier, omvattende een door zijden begrensd substraatoppervlak, voorzien van een luminescentie vertonend veiligheidskenmerk.
WO2006007745A1 (fr) * 2004-07-21 2006-01-26 Landqart Caracteristique de securite et procede de production de cette caracteristique
EA011116B1 (ru) * 2007-10-12 2008-12-30 Альтшулер, Владимир Давидович Защитный элемент, способ его изготовления, содержащая его защитная метка и способ идентификации подлинности изделий, маркированных защитной меткой
CN101519857B (zh) * 2008-02-29 2011-08-24 上海柯斯造纸防伪技术有限公司 激发光光角变化致荧光纤维变色的防伪纤维及防伪材料
US8530863B2 (en) * 2008-12-08 2013-09-10 Spectra Systems Corporation Fluorescence notch coding and authentication
DE102011018852A1 (de) 2011-04-27 2012-10-31 Mitsubishi Hitec Paper Europe Gmbh Wärmeempfindliches Aufzeichnungsmaterial mit Authentifikationsmerkmal
PL233721B1 (pl) * 2017-07-21 2019-11-29 Polska Wytwornia Papierow Wartosciowych Spolka Akcyjna Element zabezpieczajacy dokument, dokument wartosciowy zawierajacy element zabezpieczajacy oraz sposob wytwarzania dokumentu wartosciowego
US20230264504A1 (en) * 2022-02-23 2023-08-24 The Government of the United States of America, as represented by the Secretary of Homeland Security System and method of using planchettes to detect unauthorized copying or counterfeiting in articles of manufacture

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Publication number Priority date Publication date Assignee Title
US3276316A (en) 1961-08-02 1966-10-04 Polaroid Corp Process for polarizing ultraviolet light utilizing oriented polymer sheet with incorporated dichroic fluorescent dye
MY102798A (en) * 1987-12-04 1992-10-31 Portals Ltd Security paper for bank notes and the like
GB8811671D0 (en) 1988-05-17 1988-06-22 Wiggins Teape Group Ltd Security & decorative paper
US5204038A (en) * 1990-12-27 1993-04-20 The Regents Of The University Of California Process for forming polymers
GB2250474B (en) * 1990-12-04 1994-04-20 Portals Ltd Security articles
US5284364A (en) * 1992-06-10 1994-02-08 Anvik Corporation Increased-security identification card system
US5532104A (en) * 1993-08-19 1996-07-02 Olympus Optical Co., Ltd. Invisible information recording medium
US5746949A (en) * 1995-11-21 1998-05-05 Hoechst Celanese Corp. Polarizer films comprising aromatic liquid crystalline polymers comprising dichroic dyes in their main chains
GB9614261D0 (en) * 1996-07-06 1996-09-04 Secr Defence A covert mark and security marking system
EP0933655A1 (fr) * 1998-01-29 1999-08-04 ETHZ Institut für Polymere Polariseurs photoluminescents efficaces, procédé pour leur fabrication, et leur application à des dispositifs d'affichage

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Title
See references of WO0019016A1 *

Also Published As

Publication number Publication date
ES2190245T3 (es) 2003-07-16
ATE259918T1 (de) 2004-03-15
EP1115949B1 (fr) 2003-01-02
AU754452B2 (en) 2002-11-14
AU5615099A (en) 2000-04-17
ATE230455T1 (de) 2003-01-15
EP1233106B1 (fr) 2004-02-18
DE59908606D1 (de) 2004-03-25
US7108286B1 (en) 2006-09-19
DE59903926D1 (de) 2003-02-06
PL346760A1 (en) 2002-02-25
WO2000019016A1 (fr) 2000-04-06
CA2344198C (fr) 2007-05-01
EP1233106A1 (fr) 2002-08-21
CA2344198A1 (fr) 2000-04-06
BR9914061A (pt) 2001-06-19

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