Colored couplers
United States Patent 2453661
US Patent References:
Aminophenols and their preparation
- - 2220065
Color photographic process
- - 2220123
Method of preparation of natural color pictures
- - 2227981
Process for making natural color photographs
- - 2263012
Sulphonamides of dyes
- - 2271230
Aminophenols and their preparation
- - 2220065
Color photographic process
- - 2220123
Method of preparation of natural color pictures
- - 2227981
Process for making natural color photographs
- - 2263012
Sulphonamides of dyes
- - 2271230
Inventors:
Glass, Dudley B.
Arnold, Weissberger
Arnold, Weissberger
Publication Date:
11/09/1948
View Patent Images:
Export Citation:
Assignee:
EASTMAN KODAK CO
Primary Class:
Other Classes:
430/557, 430/389, 430/562, 430/385, 430/376, 430/387
International Classes:
G03C7/333
US Patent References:
| 2295008 | Photographic color forming compound | |||
| 2295009 | Photographic color forming compound | |||
| 2296306 | Nondiffusing metallic salt coupler compound | |||
| 2299641 | Processes of color photography and compositions and elements therefor | |||
| 2301861 | Ketone-amine compounds | |||
| 2304820 | Substituted monoamides of aliphatic dibasic acids | |||
| 2310943 | Polyvinyl acetals | |||
| 2328802 | New process | |||
| 2336215 | Isoalkylidene aminophenol |
Foreign References:
| GB503752A | ||||
| GB503824A |