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
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)
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)
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 |
-
1977
- 1977-12-30 NL NL7714607A patent/NL7714607A/en not_active Application Discontinuation
-
1978
- 1978-05-26 GB GB2316278A patent/GB1602755A/en not_active Expired
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 |