Inventor
RONCO KARL
7 patents
⚠️ This page may combine multiple inventors who share the name “RONCO KARL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CIBA GEIGY CORP
6 patentsUS4392999AJul 12, 1983
Monoazo pigments containing hydroxynaphthoylamino benzimidazolone radical
CIBA GEIGY CORP6 citations73
US4070353AJan 24, 1978
Dicarboxylic acid ester diazo pigments
CIBA GEIGY CORP8 citations71
US4229344AOct 21, 1980
Monazo pigments containing hydroxynaphthoylaminobenzimidazalone radical
CIBA GEIGY CORP5 citations62
US4081439AMar 28, 1978
Aromatic disazo pigments
CIBA GEIGY CORP4 citations61
US4719293AJan 12, 1988
(2,5-diisopropoxycarbonylbenzene-azo-2-hydroxy-3-carbamoyl naphthalene) pigment
CIBA GEIGY CORP2 citations60
US4051122ASep 27, 1977
Disazo pigments containing tetracarboxylic acid ester groups
CIBA GEIGY CORP0 citations49