Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5281729 | Drying and purification of benzanthrone | Klaus Borho, Zafirios Grammatis, Karl-Heinz Hennicke, Wolfgang Mach, Karl-Heinz Sartor +3 more | 1994-01-25 |
| 4550681 | Applicator for uniformly distributing a flowable material over a receiving surface | Johannes Zimmer | 1985-11-05 |
| 4443562 | Method and apparatus for producing lightweight cellular materials and structural articles | — | 1984-04-17 |
| 4436430 | Device for the continuous mixing of a dry finished mortar | Rudolf Schäfer | 1984-03-13 |
| 4402615 | Mixing tube for drying building materials | — | 1983-09-06 |
| 4359162 | Device for stacking board-staped articles | Erich Luther, Martin Maelzer | 1982-11-16 |