Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4368177 | Process of producing quicklime by calcining in a rotary kiln | Wolfram Schnabel, Gerhard Reuter | 1983-01-11 |
| 4259081 | Process of calcining limestone in a rotary kiln | Gerhard Reuter, Wolfram Schnabel | 1981-03-31 |
| 4220631 | Process of calcining limestone or hydrated lime in a rotary kiln | Harry Serbent, Heinz Eichberger, Hermann Lommert, Horst Steinhofel | 1980-09-02 |