Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8101731 | Yellow anionic disazo dyes | Michael Lennartz, Adolf Kaser | 2012-01-24 |
| 7723494 | Yellow anionic disazo dyes | Michael Lennartz, Adolf Kaser | 2010-05-25 |
| 7351808 | Anionic monoazo dyes | Michael Lennartz | 2008-04-01 |
| 7341607 | Yellow anionic disazo dyes | Michael Lennartz, Adolf Kaser | 2008-03-11 |
| 7066969 | Dyes incorporating annionic and cationic groups | Michael Lennartz, Dölf Käser | 2006-06-27 |