Inventor
KUEHLTHAU HANS-PETER
DE10 patents
Patents
10 patentsUS4542224ASep 17, 1985
Process for preparing cationic methine dyestuffs
BAYER AG11 citations73
US4294756AOct 13, 1981
Cationic dyestuffs
BAYER AG11 citations72
US4400321AAug 23, 1983
Process for the preparation of solutions of cationic polyazo dyestuffs
BAYER AG7 citations71
US4598151AJul 1, 1986
Cationic dyestuffs, a process for their preparation, and their use for dyeing and mass-coloring
BAYER AG4 citations62
US4376728AMar 15, 1983
Process for the preparation of cationic alkylarylhydrazone dyestuffs and color bases thereof
BAYER AG2 citations62
US4392998AJul 12, 1983
One pot diazotization, coupling and quaternization of aminotriazoles
BAYER AG2 citations61
US4292238ASep 29, 1981
Alkylation of benzthiazole-azo-phenylamine dyestuffs
BAYER AG3 citations61
US4000141ADec 28, 1976
Substituted tetrahydro quinoline cationic dyestuffs
BAYER AG5 citations61
US4542223ASep 17, 1985
Process for the preparation of cationic methine dyestuffs
BAYER AG3 citations60
US4513142AApr 23, 1985
Preparation of cationic methine dyestuffs
BAYER AG7 citations59