Inventor

GUNZENHAUSER SIGMUND

CH5 patents

Patents

5 patents

US4562449ADec 31, 1985

Chromogenic dihydroquinazolines

CIBA GEIGY CORP6 citations71

US4506073AMar 19, 1985

Chromenoazaindolizine compounds

CIBA GEIGY CORP5 citations60

US4174856ANov 20, 1979

Chromenoindole color formers

CIBA GEIGY CORP2 citations60

US4123439AOct 31, 1978

Chromenoindole compounds

CIBA GEIGY CORP3 citations60

US4503227AMar 5, 1985

Chromogenic dihydroquinazolines

CIBA GEIGY CORP0 citations50