Inventor
TRONICH WOLFGANG
DE18 patents
Patents
18 patentsUS5136043AAug 4, 1992
Process for the preparation of aromatic sulfonyl chlorides
HOECHST AG16 citations73
US4224222ASep 23, 1980
Process for preparing copper phthalocyanine pigments of the α-modification
HOECHST AG8 citations73
US4018791AApr 19, 1977
Process for the preparation of highly pure halogenated phthalocyanine pigment
HOECHST AG12 citations73
US4246196AJan 20, 1981
Diaminophenyl ureas
HOECHST AG8 citations72
US3984433AOct 5, 1976
Process for preparing copper phthalocyanine pigments of the α-modification
HOECHST AG13 citations71
US5559257ASep 24, 1996
Process for the preparation of tetrachloro-1,4-benzoquinone
HOECHST AG2 citations62
US4990673AFeb 5, 1991
Process for the preparation of 4,4'-dinitrodiphenylamine
HOECHST AG5 citations62
US4254054AMar 3, 1981
Process for the manufacture of 4-nitro-4'-amino-diphenylamine-2-sulfonic acid and 2-nitro-4'-amino-diphenylamine-4-sulfonic acid
HOECHST AG3 citations62
US4010180AMar 1, 1977
Process for the purification of copper phthalocyanine
HOECHST AG4 citations62
US5539114AJul 23, 1996
Process for the preparation of substituted quinazoline-2,4,-diones
HOECHST AG6 citations60
US4507491AMar 26, 1985
Process for preparing 1-nitrobenzene-2-alkyloxycarbonyl-5-carboxylic acids
HOECHST AG4 citations60
US5446190AAug 29, 1995
Process for the preparation of alkyl fluorobenzoates in high purity and high yield
HOECHST AG2 citations59
US4169851AOct 2, 1979
Process for the manufacture of acetoacetyl-aminobenzenes
HOECHST AG6 citations58
US4552970ANov 12, 1985
Solvated salts of dinitrophenylcyanamides, and a process for the preparation thereof
HOECHST AG1 citations52
US4316861AFeb 23, 1982
N-Nitroaryl-N-halosulfonyl ureas
HOECHST AG0 citations51
US4831168AMay 16, 1989
Process for preparing 2-hydroxydibenzofuran-3-carboxylic acid and alkali metal salts thereof
HOECHST AG1 citations50
US4410707AOct 18, 1983
Process for the manufacture of 3-amino-1-phenylpyrazol-5-one
HOECHST AG1 citations50
US5292932AMar 8, 1994
Process for the preparation of 5-chloro-2-hydroxy-4-alkyl-benzenesulfonic acids
HOECHST AG0 citations41