BE447815A - - Google Patents
Info
- Publication number
- BE447815A BE447815A BE447815DA BE447815A BE 447815 A BE447815 A BE 447815A BE 447815D A BE447815D A BE 447815DA BE 447815 A BE447815 A BE 447815A
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0070890 | 1941-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE447815A true BE447815A (it) |
Family
ID=7197136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE447815D BE447815A (it) | 1941-11-19 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE447815A (it) |
| CH (1) | CH231508A (it) |
| FR (1) | FR887403A (it) |
| NL (1) | NL56995C (it) |
-
0
- NL NL56995D patent/NL56995C/xx active
- BE BE447815D patent/BE447815A/xx unknown
-
1942
- 1942-10-29 CH CH231508D patent/CH231508A/de unknown
- 1942-11-03 FR FR887403D patent/FR887403A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR887403A (fr) | 1943-11-12 |
| CH231508A (de) | 1944-03-31 |
| NL56995C (it) |