BE437255A - - Google Patents
Info
- Publication number
- BE437255A BE437255A BE437255DA BE437255A BE 437255 A BE437255 A BE 437255A BE 437255D A BE437255D A BE 437255DA BE 437255 A BE437255 A BE 437255A
- 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
- G03C7/407—Development processes or agents therefor
- G03C7/413—Developers
- G03C7/4136—Developers p-Phenylenediamine or derivatives thereof
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Color Printing (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0063087 | 1938-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE437255A true BE437255A (forum.php) |
Family
ID=7195824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE437255D BE437255A (forum.php) | 1938-12-05 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2307161A (forum.php) |
| BE (1) | BE437255A (forum.php) |
| CH (1) | CH217513A (forum.php) |
| FR (1) | FR873756A (forum.php) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2551091A (en) * | 1949-09-14 | 1951-05-01 | Du Pont | Process for color developing, including treatment with a quaternary ammonium salt |
-
0
- BE BE437255D patent/BE437255A/xx unknown
-
1939
- 1939-12-04 CH CH217513D patent/CH217513A/de unknown
- 1939-12-07 US US307986A patent/US2307161A/en not_active Expired - Lifetime
-
1941
- 1941-07-09 FR FR873756D patent/FR873756A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH217513A (de) | 1941-10-31 |
| FR873756A (fr) | 1942-07-20 |
| US2307161A (en) | 1943-01-05 |