Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7462204 | Cationic diaminopyrazoles, a process for producing them and colorants containing these compounds | Otto Goettel, Andre Hayoz | 2008-12-09 |
| 7405325 | Process for the preparation of 4-hydroxalkylamino-2-nitro-anisoles | Otto Gottel, Hans-Jurgen Braun | 2008-07-29 |
| 7361198 | M-diaminobenzenes, their acid adducts and the use thereof in colorants | Otto Goettel, Andre Hayoz | 2008-04-22 |
| 7195649 | N-aryl-4,5-diaminopyrazoles and dyes containing said compounds | Otto Goettel, Wolfram Geibel | 2007-03-27 |
| 6716257 | Bridged diaminopyrazole compounds and dye compositions containing same | Otto Goettel, Aline Pirrello, Andre Hayoz | 2004-04-06 |