Inventor
GREVE MANFRED
8 patents
Patents
8 patentsUS4087244AMay 2, 1978
Dyeing and printing basic dyeable textile substrates with becationic disazo and trisazo dyes having optionally further substituted 6-hydroxy-4-methyl-3-N-pyridiniumpyridone-2-coupling component radicals
SANDOZ LTD24 citations81
US4780106AOct 25, 1988
Use of metal-free azo _compounds having at least one _6-hydroxypyrid-2-one _coupling component radical and metal _complexes thereof for dyeing _substrates and substrates dyed therewith
SANDOZ LTD8 citations73
US4673735AJun 16, 1987
Azo compounds having at least one 6-hydroxypyrid-2-one coupling component radical metal complexes thereof and intermediates therefor
SANDOZ LTD15 citations73
US4591635AMay 27, 1986
Sulfo group-free polyazo compounds containing at least two basic water-solubilizing groups in metal-free or metal complex form
SANDOZ LTD12 citations72
US4675388AJun 23, 1987
Polymeric azo compounds containing at least four cationic groups
SANDOZ LTD11 citations68
US4634764AJan 6, 1987
Non-azo and azo compounds containing at least one 4,6-diamino-1-substituted-5-substituted carbamoylpyrid-2-one group
SANDOZ LTD3 citations60
US4228072AOct 14, 1980
1-(N-alkyl-n-benzyl or substituted benzyl-N-methyl(ammonium)alkyl)-3-cyano-4-alkyl-5-(alkyl-halo-phenyl)azo-6-hydroxypyridone-2 compounds
SANDOZ LTD1 citations50
US4256635AMar 17, 1981
Optionally further substituted 5-(2'- or 4'-phenoxyphenylazo)-6-hydroxypyridone-2 compounds containing a cationic group in the 1-position
SANDOZ LTD0 citations39