Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5216884 | Method and apparatus for producing burnt material and for generating electrical energy | — | 1993-06-08 |
| 4982905 | Apparatus for crushing materials | Ludger Lohnherr, Hans-Dieter Grudno, Bernhard Zigan | 1991-01-08 |
| 4300879 | Process for the heat-treatment of fine-grained material | Wolf Goldmann, Dieter Michaelsen, Dieter Dreyer, Peter Tiggesbaumker, Klaus Bauer +2 more | 1981-11-17 |