Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5202028 | Removal of metal complex dyes from wastewaters | Ingrid Steenken-Richter, Juergen Paulig | 1993-04-13 |
| 5186846 | Dye dispersants: aryl sulphonic acid-formaldehyde condensate or ligninsulfonate | Ralf Brueckmann, Willi Bury, Johannes P. Dix, Manfred Herrmann, Waldemar Dlugosch +4 more | 1993-02-16 |
| 4614804 | Anthraquinoid dyes | Gerhard Epple, Reinhold Krallmann, Hans Weber | 1986-09-30 |
| 4465628 | Azo dyes comprising a heterocyclic diazo component | Norbert Grund, Guenter Hansen | 1984-08-14 |
| 4405330 | Navy disperse dye mixtures | Udo Bergmann, Helmut Degen, Guenter Hansen, Reinhold Krallmann | 1983-09-20 |
| 4389216 | Navy dye mixtures | Udo Bergmann, Helmut Degen, Guenter Hansen, Reinhold Krallmann | 1983-06-21 |
| 4386934 | Navy dye mixtures | Udo Bergmann, Helmut Degen, Guenter Hansen, Reinhold Krallmann | 1983-06-07 |
| 4373102 | Isoindoline dyes, their preparation and use | Peter Neumann, Wolfgang Elser, Gustav Bock | 1983-02-08 |
| 4329148 | Dye mixtures, and their use in dyeing polyesters | Guenter Hansen, Jochen-Wilfried Stuck | 1982-05-11 |
| 4321055 | Navy dye mixtures and their use in dyeing polyesters | Guenter Hansen, Hans J. Kolbinger | 1982-03-23 |
| 4221711 | Brown to violet substituted phenyl-substituted anilino azo dyes | Norbert Grund, Guenter Hansen | 1980-09-09 |