Inventor
NICKEL HORST
DE24 patents
Patents
24 patentsUS4544737AOct 1, 1985
Piperazinyl-triazinylnaphtholsulphonic acid azo dyes
BAYER AG19 citations82
US4478681AOct 23, 1984
Forgery-proof paper
BAYER AG11 citations73
US4163012AJul 31, 1979
Process for the preparation of concentrated dyestuff solutions
BAYER AG7 citations73
US4248771AFeb 3, 1981
Metal complex reactive dyestuffs
BAYER AG9 citations70
US4839468AJun 13, 1989
N-(hydroxy-sulpho-naphthyamino-triazinyl)-arylene-diamines
BAYER AG4 citations62
US4521217AJun 4, 1985
Phthalocyanine and azo dyestuff mixtures and their use for dyeing paper
BAYER AG3 citations62
US4435334AMar 6, 1984
Naphtholsulphonic acid compounds, their preparation and use as coupling components
BAYER AG3 citations62
US4387050AJun 7, 1983
Polyazo dyestuffs, a process for their preparation and their use for dyeing vegetable fibre materials and leather
BAYER AG4 citations62
US4333874AJun 8, 1982
Cationic triazinylamino azo dyestuffs
BAYER AG6 citations62
US4297278AOct 27, 1981
Pentakis-and heptakis-azoxy dyestuffs
BAYER AG5 citations62
US4591634AMay 27, 1986
Trisazo/azoxy dyestuff mixtures
BAYER AG5 citations61
US4539009ASep 3, 1985
Dyestuff mixture
BAYER AG2 citations61
US4354968AOct 19, 1982
Azo reactive dyestuffs having an aryl-triazinyl-aryl diazo component
BAYER AG2 citations61
US4077767AMar 7, 1978
Process for the preparation of concentrated solutions of urea compounds
BAYER AG3 citations60
US3997522ADec 14, 1976
Disazo dyestuffs
BAYER AG2 citations60
US3966703AJun 29, 1976
Asymmetrical frisazo dyestuffs derived from diazotized 2,7-diamino-carbazole
BAYER AG4 citations59
US4540776ASep 10, 1985
Reactive fluorotriazinylaminonaphthotriazolyphenylazopyridone or pyrimidone dyestuffs
BAYER AG4 citations58
US4337195AJun 29, 1982
Azo dyestuffs
BAYER AG5 citations57
US4411669AOct 25, 1983
Processes for dyeing paper, and agents containing azo dyestuffs
BAYER AG0 citations52
US4239886ADec 16, 1980
Salts of N-acylaminohydroxynaphthalenesulphonic acids
BAYER AG0 citations52
US4265813AMay 5, 1981
Azo dyestuffs
BAYER AG0 citations51
US4083845AApr 11, 1978
Polyazo dyestuffs having a dianisidine component, a diaminophenyl sulfonic acid component, and a naphthol component
BAYER AG1 citations51
US3995995ADec 7, 1976
Process for dyeing fibres containing amide groups
BAYER AG1 citations51
US4225493ASep 30, 1980
Disazo dyestuffs derived from three carbocyclic components including a terminal component substituted with sulfo and alkoxy
BAYER AG1 citations47