Inventor
DEHNERT JOHANNES
28 patents
Patents
28 patentsUS4855413AAug 8, 1989
Heterocyclic azo dyes containing cyanothiophene derivatives as diazo components and diaminopyridines as coupling components
BASF AG25 citations92
US4042578AAug 16, 1977
Azo dyes having 2,6-diaminopyridine derivatives as coupling components
BASF AG38 citations92
US3950321AApr 13, 1976
Disperse azo dyes of the 2,6-diaminopyridine series
BASF AG34 citations92
US4855412AAug 8, 1989
Diaminopyridine azo dyes having acyloxy radicals substituted on the diaminopyridine
BASF AG22 citations82
US4128545ADec 5, 1978
Azo dyes with 2,6-diamino-pyridine coupling component
BASF AG30 citations82
US3979378ASep 7, 1976
Water-soluble azo dyes having a substituted 2-hydroxypyridone (6) coupling component
BASF AG28 citations81
US4650860AMar 17, 1987
Benzisothiazolazo, diaminopyridine dyes
BASF AG9 citations74
US3974123AAug 10, 1976
Dyes for thermoplastics
BASF AG11 citations74
US4315756AFeb 16, 1982
Oil-soluble azo dye with N-substituted β-naphthylamine as coupling component
BASF AG15 citations73
US4150943AApr 24, 1979
Uniformly dyed water-swellable cellulosic fibers
BASF AG8 citations73
US4146535AMar 27, 1979
Azo dyes having a 3-cyano- or 3-carbamoyl-2,6-diamino-pyridine coupling component
BASF AG14 citations73
US4157893AJun 12, 1979
Uniformly dyed water-swellable cellulosic fibers
BASF AG8 citations71
US4145341AMar 20, 1979
Water-soluble azo dyes containing diaminopyrimidine coupler components
BASF AG12 citations71
US4965346AOct 23, 1990
Heterocyclic azo dyes containing cyanothiophene derivatives as diazo components and diaminopyridines as coupling components
BASF AG2 citations63
US4424154AJan 3, 1984
Azo dye having a 3-cyano- or 3-carbamoyl-2,6-diaminopyridine coupling component
BASF AG2 citations63
US4419290ADec 6, 1983
Diazo dyes having a coupler component attached to a sulfaphenyl-azo-phenyl-azo-radical
BASF AG4 citations63
US4724259AFeb 9, 1988
Azo dyes and liquid-crystalline materials containing these dyes
BASF AG6 citations62
US4344880AAug 17, 1982
Disazo dyestuffs having an acylamino group and an aromatic-oxy group on different terminal moieties
BASF AG4 citations62
US4231746ANov 4, 1980
Dyeing of cellulose-containing textile material and novel dyes for use therein
BASF AG4 citations62
US4203894AMay 20, 1980
Azo dyes containing sulfonic acid groups and oxdiazolyl radicals
BASF AG2 citations62
US4154577AMay 15, 1979
Uniformly disperse dyed water-swellable cellulosic fibers
BASF AG4 citations61
US4113720ASep 12, 1978
Disperse azo dye with diaminopyrimidine coupling component
BASF AG2 citations60
US4430267AFeb 7, 1984
Metal complex dyes derived from 4-phenylazo-5-aminopyrazoles
BASF AG0 citations52
US4210583AJul 1, 1980
Azo dyes of the 2,6-di(substituted) amino pyridine series
BASF AG1 citations52
US3981873ASep 21, 1976
Sulfur containing dyes of the quinonaphthalone series
BASF AG1 citations52
US4599402AJul 8, 1986
Metal complex dyes containing azo azomethine groups
BASF AG1 citations51
US4167394ASep 11, 1979
Uniformly dyed water-swellable cellulosic fibers
BASF AG1 citations50
US4285693AAug 25, 1981
Dyeing of surface coatings, organic solvents and petroleum products
BASF AG1 citations48