BE442409A - - Google Patents
Info
- Publication number
- BE442409A BE442409A BE442409DA BE442409A BE 442409 A BE442409 A BE 442409A BE 442409D A BE442409D A BE 442409DA BE 442409 A BE442409 A BE 442409A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/32—Colour coupling substances
- G03C7/36—Couplers containing compounds with active methylene groups
- G03C7/38—Couplers containing compounds with active methylene groups in rings
- G03C7/384—Couplers containing compounds with active methylene groups in rings in pyrazolone rings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0067602 | 1940-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE442409A true BE442409A (no) |
Family
ID=7196750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE442409D BE442409A (no) | 1940-08-08 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2354552A (no) |
| BE (1) | BE442409A (no) |
| CH (1) | CH221617A (no) |
| FR (1) | FR876815A (no) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2536398A (en) * | 1947-10-10 | 1951-01-02 | Gen Aniline & Film Corp | Pyrazolone diazotype couplers |
| US2646421A (en) * | 1952-03-14 | 1953-07-21 | Eastman Kodak Co | Polymeric pyrazolone couplers |
| US2933391A (en) * | 1956-09-06 | 1960-04-19 | Eastman Kodak Co | Photographic emulsions containing 5-pyrazolone coupler compounds |
| US3062653A (en) * | 1960-02-18 | 1962-11-06 | Eastman Kodak Co | Photographic emulsion containing pyrazolone magenta-forming couplers |
-
0
- BE BE442409D patent/BE442409A/xx unknown
-
1941
- 1941-08-07 FR FR876815D patent/FR876815A/fr not_active Expired
- 1941-08-25 CH CH221617D patent/CH221617A/de unknown
-
1942
- 1942-02-17 US US431262A patent/US2354552A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH221617A (de) | 1942-06-15 |
| US2354552A (en) | 1944-07-25 |
| FR876815A (fr) | 1942-11-18 |