Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4436869 | Production of closed-cell polyurethane moldings having a densified surface zone | Heinz Bollmann, Herbert Stutz, Wolfgang Scholz | 1984-03-13 |
| 4334033 | Process for the manufacture of polyurethane elastomers | Lothar Metzinger, Heinz Bollmann | 1982-06-08 |
| 4258141 | Process for manufacture of flexible polyurethane foams with cyanic acid derivatives | Wolfgang Jarre, Gerhard Mueller, Eckhard Ropte | 1981-03-24 |