Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6933371 | Bisazo dyestuffs based on hydroxynaphthalene carboxylic acid | Gunter Schroder, Sophia Ebert, Karl-Heinz Etzbach, Rudiger Sens | 2005-08-23 |
| 6903197 | Azoxy dyes and copper complexes thereof | Karl-Heinz Etzbach, Rudiger Sens, Claudia Krah | 2005-06-07 |
| 6846956 | Triarylmethane dyes | Hellmut Kast, Thomas Gessner | 2005-01-25 |