NL253898A - - Google Patents
Info
- Publication number
- NL253898A NL253898A NL253898DA NL253898A NL 253898 A NL253898 A NL 253898A NL 253898D A NL253898D A NL 253898DA NL 253898 A NL253898 A NL 253898A
- Authority
- NL
- Netherlands
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
- C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
- C07D491/10—Spiro-condensed systems
-
- 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
- G03C1/685—Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Color Printing (AREA)
- Indole Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82746259A | 1959-07-16 | 1959-07-16 | |
| US191431A US3231584A (en) | 1959-07-16 | 1962-05-01 | 1-phenyl-3, 3-dimethylspiro[(2'h-1'-benzopyran)-2', 2'-indoline] compound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL253898A true NL253898A (no) |
Family
ID=26887043
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL127064D NL127064C (no) | 1959-07-16 | ||
| NL253898D NL253898A (no) | 1959-07-16 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL127064D NL127064C (no) | 1959-07-16 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3231584A (no) |
| CH (1) | CH395090A (no) |
| DE (1) | DE1294382B (no) |
| FR (1) | FR1262318A (no) |
| GB (1) | GB883803A (no) |
| NL (2) | NL253898A (no) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE623057A (no) * | 1961-10-05 | |||
| FR1394163A (fr) * | 1964-02-18 | 1965-04-02 | Saint Gobain | Compositions photochromes notamment pour la fabrication de vitrages à transmission variable |
| FR1451332A (fr) * | 1965-06-23 | 1966-01-07 | Saint Gobain | Nouvelles substances photochromiques di-spiropyranniques et procédé de préparation de ces substances |
| US3390192A (en) * | 1965-10-20 | 1968-06-25 | Geigy Chem Corp | Dihydropyrenes and photochromic compositions based thereon |
| US3528926A (en) * | 1966-10-27 | 1970-09-15 | Ncr Co | Mixed photochromic compound composition |
| US3507563A (en) * | 1967-02-01 | 1970-04-21 | Itek Corp | Color-reversible anti-glare mirror |
| GB1245079A (en) * | 1968-12-10 | 1971-09-02 | Fuji Photo Film Co Ltd | Spiro-indoline derivatives and their use in pressure-sensitive copying paper |
| FR2036168A5 (no) * | 1969-03-06 | 1970-12-24 | Saint Gobain | |
| GB8610709D0 (en) * | 1986-05-01 | 1986-06-04 | Plinkington Bros Plc | Photochromic lenses |
| GB8611837D0 (en) * | 1986-05-15 | 1986-06-25 | Plessey Co Plc | Photochromic spiropyran compounds |
| GB8614680D0 (en) * | 1986-06-17 | 1986-07-23 | Plessey Co Plc | Photoreactive lenses |
| US5171636A (en) * | 1989-12-12 | 1992-12-15 | Enichem Synthesis S.P.A. | Photochromatic and thermochromatic spiro-oxazepin-oxazine compounds and the process for their preparation |
| IT1237528B (it) * | 1989-12-12 | 1993-06-08 | Enichem Sintesi | Composti fotocromatici e termocromatici spiro-ossazepin-ossazine e procedimento per la loro preparazione |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE442515A (no) * | 1940-07-30 | |||
| NL226920A (no) * | 1957-04-23 | |||
| NL113671C (no) * | 1959-04-03 | |||
| US3085469A (en) * | 1959-10-12 | 1963-04-16 | Ncr Co | Optical information-processing apparatus and method |
-
0
- NL NL127064D patent/NL127064C/xx active
- NL NL253898D patent/NL253898A/xx unknown
-
1960
- 1960-07-01 GB GB23082/60A patent/GB883803A/en not_active Expired
- 1960-07-11 FR FR832582A patent/FR1262318A/fr not_active Expired
- 1960-07-12 CH CH794860A patent/CH395090A/fr unknown
- 1960-07-12 DE DEN18612A patent/DE1294382B/de active Pending
-
1962
- 1962-05-01 US US191431A patent/US3231584A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR1262318A (fr) | 1961-05-26 |
| NL127064C (no) | |
| GB883803A (en) | 1961-12-06 |
| CH395090A (fr) | 1965-07-15 |
| DE1294382B (de) | 1969-05-08 |
| US3231584A (en) | 1966-01-25 |