GB8800548D0 - Security documents - Google Patents

Security documents

Info

Publication number
GB8800548D0
GB8800548D0 GB888800548A GB8800548A GB8800548D0 GB 8800548 D0 GB8800548 D0 GB 8800548D0 GB 888800548 A GB888800548 A GB 888800548A GB 8800548 A GB8800548 A GB 8800548A GB 8800548 D0 GB8800548 D0 GB 8800548D0
Authority
GB
United Kingdom
Prior art keywords
security documents
documents
security
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
GB888800548A
Other versions
GB2201376A (en
GB2201376B (en
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.)
Liquid Crystal Devices Ltd
Original Assignee
Liquid Crystal Devices Ltd
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
Application filed by Liquid Crystal Devices Ltd filed Critical Liquid Crystal Devices Ltd
Publication of GB8800548D0 publication Critical patent/GB8800548D0/en
Publication of GB2201376A publication Critical patent/GB2201376A/en
Application granted granted Critical
Publication of GB2201376B publication Critical patent/GB2201376B/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
    • 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
    • B42D2033/12—
    • B42D2033/26—
    • 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
    • B42D25/318—Signatures

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Credit Cards Or The Like (AREA)
GB8800548A 1987-01-13 1988-01-12 Security documents Expired - Fee Related GB2201376B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878700689A GB8700689D0 (en) 1987-01-13 1987-01-13 Security documents

Publications (3)

Publication Number Publication Date
GB8800548D0 true GB8800548D0 (en) 1988-02-10
GB2201376A GB2201376A (en) 1988-09-01
GB2201376B GB2201376B (en) 1990-09-05

Family

ID=10610614

Family Applications (2)

Application Number Title Priority Date Filing Date
GB878700689A Pending GB8700689D0 (en) 1987-01-13 1987-01-13 Security documents
GB8800548A Expired - Fee Related GB2201376B (en) 1987-01-13 1988-01-12 Security documents

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB878700689A Pending GB8700689D0 (en) 1987-01-13 1987-01-13 Security documents

Country Status (1)

Country Link
GB (2) GB8700689D0 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698390B1 (en) * 1992-11-20 1994-12-23 Arjo Wiggins Sa Security document authenticated by piezooptic effect.
GB2272861A (en) * 1992-11-28 1994-06-01 Univ Cardiff Apparatus for reading security documents bearing photochromic or thermochromic prints.
GB2274428B (en) * 1993-01-20 1996-08-21 Portals Security threads
GB2347646B (en) 1999-03-12 2001-01-31 Rue De Int Ltd Improvements in security elements
DE19941295A1 (en) † 1999-08-31 2001-03-01 Giesecke & Devrient Gmbh Security element
DE102004021246A1 (en) 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Security element and method for its production
GB2438384B (en) * 2006-05-26 2008-10-29 Rue De Int Ltd Improvements in forming security devices
FR2922905B1 (en) * 2007-10-26 2009-12-18 Arjowiggins Licensing Sas SAFETY STRUCTURE COMPRISING A THERMOCHROMIC ELEMENT AND A PHOTOCHROMIC ELEMENT
FR3015357B1 (en) * 2013-12-19 2016-01-29 Arjowiggins Security SECURITY ARTICLE
FR3019495B1 (en) * 2014-04-02 2021-07-09 Oberthur Technologies SAFETY DEVICE SUITABLE TO LIGHT A REDUCED LUMINOSITY PATTERN
US10354177B1 (en) * 2018-07-10 2019-07-16 Capital One Services, Llc Credit card with chromogenic features

Also Published As

Publication number Publication date
GB2201376A (en) 1988-09-01
GB8700689D0 (en) 1987-02-18
GB2201376B (en) 1990-09-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940112