Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6143379 | Polymer laminates having increased hiding power | Axel Schoenfeld | 2000-11-07 |
| 6017984 | Colored cholesteric liquid-crystal polymers having optically variable properties | Axel Schonfeld, Erwin Dietz | 2000-01-25 |
| 4782111 | Colorant formulation | Peter Klein, Wolfgang Teige | 1988-11-01 |
| 4235641 | Dyeing agent compositions based on polypropylene wax | Manfred Engelmann, Karl-Heinz Maier, Arno Spange, Hans-Joachim Lenz, Wolfgang Teige | 1980-11-25 |