Inventor

GHYS THEOFIEL H

BE3 patents

Patents

3 patents

US4686170AAug 11, 1987

Photographic silver complex diffusion transfer reversal process under yellow safelight

AGFA GEVAERT NV7 citations70

US4202695AMay 13, 1980

Photographic Lippmann emulsions

AGFA GEVAERT NV2 citations59

US4132551AJan 2, 1979

High temperature processing of photographic silver halide material

AGFA GEVAERT NV3 citations56