Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5006566 | Preparation of foams having a high compressive strength | Reinhold Weber, Manfred Weilbacher, Hermann Tatzel, Hans D. Zettler, Klaus Hinselmann | 1991-04-09 |
| 4894191 | Preparation of polyolefin foams | Hermann Tatzel, Hans D. Zettler, Wolfgang Schneider, Gerhard Dembek | 1990-01-16 |
| 4840976 | Production of closed-celled foams of high compressive strength | Reinhold Weber, Manfred Weilbacher | 1989-06-20 |
| 4297252 | Aging-resistant fireproofing material | Arndt C. Caesar, Wolfram Koegel, Friedheim Gaertner | 1981-10-27 |