Title:
Color photography with azosubstituted couplers
United States Patent 2434272

Inventors:
Jelley, Edwin E.
Vittum, Paul W.
Publication Date:
01/13/1948
View Patent Images:
Assignee:
EASTMAN KODAK CO
Primary Class:
Other Classes:
430/384, 430/555, 430/557, 430/388, 430/553, 534/876, 534/792, 430/386, 430/562, 430/563, 534/739, 534/742, 430/558, 534/749, 534/822, 430/390
International Classes:
G03C7/333
US Patent References:
2316782Process of producing multicolor images
2320418Color photographs
2342620Azo-reversal process of color photography
2227981Method of preparation of natural color pictures
2263012Process for making natural color photographs
2308023Colored photographic image
2297732Photographic color process involving the formation of azo dye images
Foreign References:
GB503824A