Inventor
PAETZOLD WALTER
DE7 patents
Patents
7 patentsUS4455359AJun 19, 1984
Tamper-proof document
AGFA GEVAERT AG34 citations87
US5229264AJul 20, 1993
Photographic silver halide emulsion
AGFA GEVAERT AG6 citations71
US5006455AApr 9, 1991
Gradation-variable black-and-white paper
AGFA GEVAERT AG7 citations71
US4987063AJan 22, 1991
Gradation variable black- and -white paper
AGFA GEVAERT AG10 citations70
US4301242ANov 17, 1981
Emulsion mixture for color reversal (reflection viewing) material
AGFA GEVAERT AG10 citations68
US4990440AFeb 5, 1991
Photographic silver halide emulsion containing gelatine
AGFA GEVAERT AG0 citations51
US4810627AMar 7, 1989
Photographic recording material
AGFA GEVAERT AG0 citations48