Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4772441 | Styrene polymers containing blowing agents | Klaus Hahn, Walter Manfred, Isidoor DeGrave | 1988-09-20 |
| 4189515 | Particulate expandable styrene polymers having short minimum molding times | Rolf Moeller, Rupert Schick, Erhard Stahnecker | 1980-02-19 |