Inventor
LANDLER JOSEF
DE8 patents
⚠️ This page may combine multiple inventors who share the name “LANDLER JOSEF”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOECHST AG
6 patentsUS4302254ANov 24, 1981
Process for the manufacture of pigment preparations
HOECHST AG11 citations71
US4118184AOct 3, 1978
Stable liquid aqueous composition of a water-soluble fiber-reactive azo dyestuff, containing a buffer substance, the dyestuff having been prepared by diazotization with a nitrite and coupling in the absence of acid
HOECHST AG12 citations71
US4035350AJul 12, 1977
Process for the preparation of water-soluble azo dyestuffs by reacting an aromatic amine and a coupling component with alkali metal nitrite or alkyl nitrite in the absence of acid
HOECHST AG15 citations69
US4182708AJan 8, 1980
Process for the preparation of azo pigments by diazotizing in a dipolar aprotic organic solvent and azo pigments obtained therefrom
HOECHST AG2 citations60
US4181805AJan 1, 1980
Process for the preparation of pure sodium hydroxide addition compounds of cis-isomers of naphthoylene-bis-benzimidazoles
HOECHST AG2 citations60
US4607096AAug 19, 1986
Azo pigments obtained by diazotizing in a dipolar aprotic organic solvent
HOECHST AG4 citations56