Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4518732 | Solid stabilizer composition | Hubert Muller | 1985-05-21 |
| 4385147 | Stabilization of chlorine-containing thermoplastics with m-aminophenol derivatives | Hermann O. Wirth, Hans-Helmut Friedrich | 1983-05-24 |
| 4369276 | Pyrrole stabilizers for chlorine-containing thermoplastics | Hermann O. Wirth, Hans-Helmut Friedrich | 1983-01-18 |
| 4369277 | Pyrrole-stabilized chlorine-containing thermoplastics | Hermann O. Wirth, Hans-Helmut Friedrich | 1983-01-18 |
| 4290940 | Pyrrole stabilizers for chlorine-containing thermoplastics | Hermann O. Wirth, Hans-Helmut Friedrich | 1981-09-22 |