Inventor
KAST HELLMUT
13 patents
Patents
13 patentsUS4223144ASep 16, 1980
Triphenylmethane dyes
BASF AG24 citations81
US4147604AApr 3, 1979
Photopolymerizable binders containing diaminobenzophenones
BASF AG20 citations81
US4976744ADec 11, 1990
Preparation of concentrated solutions of cationic dyes as mono-carboxylates in glycol ether
BASF AG7 citations73
US4000135ADec 28, 1976
Manufacture of basic dyes by catalytic oxidation
BASF AG7 citations72
US6846956B2Jan 25, 2005
Triarylmethane dyes
BASF AG2 citations62
US5073634ADec 17, 1991
Tetrachloroferrates of basic dyes
BASF AG3 citations62
US3946017AMar 23, 1976
Lactones of the benzaxanthere series and dye-forming components for use in duplication processes
BASF AG3 citations62
US4176229ANov 27, 1979
Basic dyes
BASF AG3 citations61
US6160169ADec 12, 2000
Preparation of amine salts of 4-nitrotoluene-2-sulfonic acid
BASF AG2 citations60
US4052398AOct 4, 1977
Diazarhodamine-lactones, their manufacture and their use as dye intermediates for copying processes
BASF AG4 citations60
US3931182AJan 6, 1976
Lactones of the diazaxanthene series, their production and their use as dye-forming components for copying methods
BASF AG6 citations60
US3997541ADec 14, 1976
Lactones of the benzazaxanthene series and dye-forming components for duplication processes
BASF AG1 citations51
US5892105AApr 6, 1999
Preparation of amine salts of 4-nitrotoluene-2-sulfonic acid
BASF AG1 citations49