GB2201376B - Security documents - Google Patents

Security documents

Info

Publication number
GB2201376B
GB2201376B GB8800548A GB8800548A GB2201376B GB 2201376 B GB2201376 B GB 2201376B GB 8800548 A GB8800548 A GB 8800548A GB 8800548 A GB8800548 A GB 8800548A GB 2201376 B GB2201376 B GB 2201376B
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.)
Expired - Fee Related
Application number
GB8800548A
Other versions
GB8800548D0 (en
GB2201376A (en
Inventor
Douglas Hugh Dayment
Robert John Pugh
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
    • 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
    • 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 GB8800548D0 (en) 1988-02-10
GB2201376A GB2201376A (en) 1988-09-01
GB2201376B true 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
GB8700689D0 (en) 1987-02-18
GB8800548D0 (en) 1988-02-10
GB2201376A (en) 1988-09-01

Similar Documents

Publication Publication Date Title
GB2204272B (en) Security documents
GB8713562D0 (en) Security arrangement
GB8703400D0 (en) Security marking
GB8609637D0 (en) Security arrangement
GB2193591B (en) Security arrangement
GB2201376B (en) Security documents
GB8706095D0 (en) Security item
GB2208953B (en) Security arrangements
GB8704765D0 (en) Security system
GB2208302B (en) Security bar
GB8404403D0 (en) Handling security documents
GB8710191D0 (en) Security arrangement
GB8719600D0 (en) Security members
GB8709491D0 (en) Security bar
GB8724080D0 (en) Security containers
GB8723957D0 (en) Security system
GB2208558B (en) Security system
GB8730212D0 (en) Security arrangements
GB8717775D0 (en) Security case
GB8718991D0 (en) Pay-phone etc security
GB8401252D0 (en) Security documents
GB8606096D0 (en) Document security
GB8722181D0 (en) Security cards
GB8726855D0 (en) Security means
GB8704508D0 (en) Security card

Legal Events

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

Effective date: 19940112