Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7183409 | Basic mono- and bisazo compounds | Friedrich Lehr, Heidrun Schene | 2007-02-27 |
| 7097699 | Composition for printing recording materials | Robert Egli, Oliver Eich, Hans-Tobias Macholdt | 2006-08-29 |
| 6930178 | 1:2 chromium complex dyes | Rainer Nusser, Georg Schoefberger | 2005-08-16 |
| 6464768 | Water-soluble stilbene dyes, their preparation and use | Wolfgang Bauer, Heidemarie Menzel, Josef Geisenberger | 2002-10-15 |
| 6432185 | Red acid dyes for injet printing and paper dyeing | Wolfgang Bauer, Josef Geisenberger, Heidemarie Menzel | 2002-08-13 |
| 6406527 | Water-soluble red acid dyes, their preparation and use | Wolfgang Bauer, Josef Geisenberger, Heidemarie Menzel | 2002-06-18 |
| 6140478 | Basic azo compounds, their production and use | Jurgen Geiwiz, Helmut Moser | 2000-10-31 |
| 5929215 | Basic monoazo compounds | — | 1999-07-27 |
| 5665871 | Mixtures of copper phthalocyanine and copper-containing azo dyes, their production and use | — | 1997-09-09 |
| 5498701 | Basic disazo compounds containing sulphonic acid groups | — | 1996-03-12 |
| 5495003 | 2,2'-disulfo-4,4'-substituted triazinylaminophenyl disazostilbenes | Ulrich Zirngibl | 1996-02-27 |
| 5122605 | Sulfo group containing triphendioxazines having at least one 1,3,5-triazine ring | — | 1992-06-16 |
| 5006128 | "Substituted 2,4-di[4'-(disulfonaphth-2""-ylazo)phenylamino]-6-amino-1,3,5-triazines" | — | 1991-04-09 |
| 4877412 | "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" | — | 1989-10-31 |
| 4875903 | 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 | — | 1989-10-24 |
| 4876342 | Oxazine compounds substituted by one or more basic groups and preparation thereof | — | 1989-10-24 |
| 4833235 | Sulfo group-containing disaz compounds having a heterocyclic coupling component radical | — | 1989-05-23 |
| 4780106 | 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 | Helmut Moser, Manfred Greve, Roland Wald | 1988-10-25 |
| 4764175 | 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 | Jacky Dore | 1988-08-16 |
| 4742160 | 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 | Jacky Dore | 1988-05-03 |
| 4686285 | 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 | — | 1987-08-11 |
| 4673735 | Azo compounds having at least one 6-hydroxypyrid-2-one coupling component radical metal complexes thereof and intermediates therefor | Helmut Moser, Manfred Greve, Roland Wald | 1987-06-16 |
| 4670546 | Disazo and polyazo compounds containing at least two cationic groups in metal-free or 1:1 or 1:2 metal complex form | Jacky Dore | 1987-06-02 |
| 4594410 | Azo compounds containing both sulfo groups and basic or cationic groups which compounds are in metal-free or 1:1 metal complex form | — | 1986-06-10 |
| 4465627 | Sulfo group-free disazo, trisazo and tetrakisazo compounds containing at lease one basic or cationic group | — | 1984-08-14 |