Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5735457 | Rubber mixture for an elastic intermediate layer for a rail support | Edgar Bohm, Karl-Heinz Krause, Gerhard Merkmann, Rolf Steinmuller, Klaus Tübel | 1998-04-07 |
| 5637645 | Caoutchouc mixture for the manufacture of rubber products with low-temperature application capability, resistance to oil, low crystallization tendency and high dynamic stressability | Gerhard Merkmann, Karl-Heinz Krause | 1997-06-10 |