NL7714607A - PHOTOCHROME CONNECTIONS AND PROCEDURE FOR PREPARING THEM AS WELL AS RECORDING OR DISPLAY DEVICE FOR PHOTOCHROME IMAGES AND PROCEDURE FOR FORMING A TEMPORARY IMAGE. - Google Patents

PHOTOCHROME CONNECTIONS AND PROCEDURE FOR PREPARING THEM AS WELL AS RECORDING OR DISPLAY DEVICE FOR PHOTOCHROME IMAGES AND PROCEDURE FOR FORMING A TEMPORARY IMAGE.

Info

Publication number
NL7714607A
NL7714607A NL7714607A NL7714607A NL7714607A NL 7714607 A NL7714607 A NL 7714607A NL 7714607 A NL7714607 A NL 7714607A NL 7714607 A NL7714607 A NL 7714607A NL 7714607 A NL7714607 A NL 7714607A
Authority
NL
Netherlands
Prior art keywords
photochrome
procedure
connections
images
recording
Prior art date
Application number
NL7714607A
Other languages
Dutch (nl)
Original Assignee
Plessey Co 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
Priority claimed from US05/801,915 external-priority patent/US4145536A/en
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Publication of NL7714607A publication Critical patent/NL7714607A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
NL7714607A 1977-05-31 1977-12-30 PHOTOCHROME CONNECTIONS AND PROCEDURE FOR PREPARING THEM AS WELL AS RECORDING OR DISPLAY DEVICE FOR PHOTOCHROME IMAGES AND PROCEDURE FOR FORMING A TEMPORARY IMAGE. NL7714607A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/801,915 US4145536A (en) 1973-09-01 1977-05-31 Photochromic compounds

Publications (1)

Publication Number Publication Date
NL7714607A true NL7714607A (en) 1978-12-04

Family

ID=25182350

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7714607A NL7714607A (en) 1977-05-31 1977-12-30 PHOTOCHROME CONNECTIONS AND PROCEDURE FOR PREPARING THEM AS WELL AS RECORDING OR DISPLAY DEVICE FOR PHOTOCHROME IMAGES AND PROCEDURE FOR FORMING A TEMPORARY IMAGE.

Country Status (2)

Country Link
GB (1) GB1602755A (en)
NL (1) NL7714607A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2104504B (en) * 1981-07-16 1985-05-09 English Clays Lovering Pochin Stabilisation of photochromic fulgides and fulgimides
GB2146327B (en) * 1983-09-07 1986-11-26 Plessey Co Plc Photochromic fused-ring organic compounds and their use in photoreactive lenses
GB8703400D0 (en) * 1987-02-13 1987-03-18 Courtaulds Plc Security marking
US7919155B2 (en) * 2007-03-07 2011-04-05 Xerox Corporation Document and method of making document including invisible information for security applications
US8083264B2 (en) 2008-02-11 2011-12-27 Xerox Corporation Document with invisible encoded information and method of making the same

Also Published As

Publication number Publication date
GB1602755A (en) 1981-11-18

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
CNR Transfer of rights (patent application after its laying openfor public ins pection)

Free format text: GEC-MARCONI LIMITED

BV The patent application has lapsed