Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5059643 | Stabilized polyamides | Hans-Josef Buysch, Hans-Georg Gelhaar, Franz Zimmermann | 1991-10-22 |
| 4837265 | Process for the preparation of stabilized polyamides | Franz Zimmermann | 1989-06-06 |
| 4340389 | Process for the preparation of water-soluble dyestuffs with a low salt content | Konrad Nonn, Joachim Laser, Karlheinz Wolf, Reinhold Hornle | 1982-07-20 |