P

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 patents
US5122605AJun 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 patents

CLARIANT GMBH

3 patents

FIDELITY UNION TRUST COMPANY A

1 patent