Inventor
CIECIUCH RONALD F W
3 patents
Patents
3 patentsUS4098783AJul 4, 1978
Dye substituted cyclic 1,3-sulfur-nitrogen compounds as dye image-forming materials in photography
POLAROID CORP44 citations89
US4060417ANov 29, 1977
Diffusion transfer elements comprising color-providing compounds capable of cleavage upon reaction with silver ions and silver ion barrier layers
POLAROID CORP14 citations70
US4025682AMay 24, 1977
Photographic products
POLAROID CORP3 citations57