Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8152861 | Dark coloured azo dyes | Markus Speckbacher, Hans-Jurgen Braun | 2012-04-10 |
| 7977482 | Dark coloured azo dyes | Markus Speckbacher, Hans-Jurgen Braun | 2011-07-12 |
| 7544215 | Neutral and cationic naphthalene and colorants for keratin fibers containing these compounds | Markus Speckbacher, Hans-Juergen Braun | 2009-06-09 |