Inventor
PEDRAZZI REINHARD
30 patents
⚠️ This page may combine multiple inventors who share the name “PEDRAZZI REINHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SANDOZ LTD
20 patentsUS5122605AJun 16, 1992
Sulfo group containing triphendioxazines having at least one 1,3,5-triazine ring
SANDOZ LTD26 citations92
US5006128AApr 9, 1991
Substituted 2,4-di[4'-(disulfonaphth-2"-ylazo)phenylamino]-6-amino-1,3,5-triazines
SANDOZ LTD31 citations92
US4686285AAug 11, 1987
Basic azo and non-azo compounds having one or two disubstituted 1,3,5-triazine rings each of which is linked through a bridging radical to the 1-position of a pyrazole ring
SANDOZ LTD38 citations92
US4273707AJun 16, 1981
Monoazo and disazo dyes containing at least one sulfo group and at least two basic or cationic groups
SANDOZ LTD33 citations92
US4367172AJan 4, 1983
Disazo dyes containing at least one sulfo group and at least two basic or cationic groups
SANDOZ LTD19 citations82
US4363761ADec 14, 1982
Monoazo dyes containing at least one sulfo group and at least two basic or cationic groups
SANDOZ LTD25 citations82
US4742160AMay 3, 1988
Sulfo group-containing basic azo compounds having a central 1,3,5-triazine ring and two terminal 1-hydroxynaphthyl-2 groups and 1:1 and 1:2 metal complexes therof
SANDOZ LTD22 citations81
US5498701AMar 12, 1996
Basic disazo compounds containing sulphonic acid groups
SANDOZ LTD11 citations74
US4877412AOct 31, 1989
Sulfo group-containing monoazo compounds having an unsubstituted or substituted 4-(benzothiazol-2'-yl)phenyl or 4-(6'-benzothiazol-2"yl)-benzothiazol-2'-yl)phenyldiazo component radical and a 6-hydroxypyrid-2-one coupling component radical
SANDOZ LTD17 citations74
US4875903AOct 24, 1989
Monoazo compounds containing a 2-sulfophenyl diazo component radical and a 1-hydroxy-naphthalene-sulfonic or disulfonic acid coupling component radical and two substituted 1,3,5-triazine rings
SANDOZ LTD10 citations74
US4594410AJun 10, 1986
Azo compounds containing both sulfo groups and basic or cationic groups which compounds are in metal-free or 1:1 metal complex form
SANDOZ LTD20 citations74
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
US4764175AAug 16, 1988
Metal-free monoazo and disazo compounds having a 1-hydroxy-5,6-, 7- or 8- substituted 1,3,5-triazinylamino-3- or 4 sulfonic acid coupling component radical and 1:1 copper complexes
SANDOZ LTD12 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
US5495003AFeb 27, 1996
2,2'-disulfo-4,4'-substituted triazinylaminophenyl disazostilbenes
SANDOZ LTD8 citations71
US4876342AOct 24, 1989
Oxazine compounds substituted by one or more basic groups and preparation thereof
SANDOZ LTD4 citations63
US4833235AMay 23, 1989
Sulfo group-containing disaz compounds having a heterocyclic coupling component radical
SANDOZ LTD5 citations63
US4465627AAug 14, 1984
Sulfo group-free disazo, trisazo and tetrakisazo compounds containing at lease one basic or cationic group
SANDOZ LTD4 citations63
US3953419AApr 27, 1976
Salts of stilbene-azo and stilbene-azoxy dyes and process for their preparation
SANDOZ LTD6 citations63
US4670546AJun 2, 1987
Disazo and polyazo compounds containing at least two cationic groups in metal-free or 1:1 or 1:2 metal complex form
SANDOZ LTD6 citations62
CLARIANT FINANCE BVI LTD
6 patentsUS5665871ASep 9, 1997
Mixtures of copper phthalocyanine and copper-containing azo dyes, their production and use
CLARIANT FINANCE BVI LTD20 citations92
US5929215AJul 27, 1999
Basic monoazo compounds
CLARIANT FINANCE BVI LTD21 citations84
US6140478AOct 31, 2000
Basic azo compounds, their production and use
CLARIANT FINANCE BVI LTD9 citations67
US7183409B2Feb 27, 2007
Basic mono- and bisazo compounds
CLARIANT FINANCE BVI LTD2 citations59
US6930178B2Aug 16, 2005
1:2 chromium complex dyes
CLARIANT FINANCE BVI LTD0 citations51
US7097699B2Aug 29, 2006
Composition for printing recording materials
CLARIANT FINANCE BVI LTD1 citations50
CLARIANT GMBH
3 patentsUS6432185B1Aug 13, 2002
Red acid dyes for injet printing and paper dyeing
CLARIANT GMBH17 citations84
US6464768B1Oct 15, 2002
Water-soluble stilbene dyes, their preparation and use
CLARIANT GMBH9 citations73
US6406527B1Jun 18, 2002
Water-soluble red acid dyes, their preparation and use
CLARIANT GMBH6 citations62