Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4496313 | Method of calcining minerals containing heat-value components | Wolfram Quittkat, Rudiger Schmidt | 1985-01-29 |
| 4391583 | Process of thermally treating bulk materials in a rotary kiln | Harry Serbent, Detlev Schlebusch, Wolfram Schnabel | 1983-07-05 |
| 4368177 | Process of producing quicklime by calcining in a rotary kiln | Wolfram Schnabel, Herbert Lausch | 1983-01-11 |
| 4312666 | Steel making process | Harry Serbent, Wolfram Schnabel, Heinz Eichberger | 1982-01-26 |
| 4259081 | Process of calcining limestone in a rotary kiln | Wolfram Schnabel, Herbert Lausch | 1981-03-31 |
| 4247323 | Process of directly reducing iron oxide-containing materials | Harry Serbent, Wolfram Schnabel | 1981-01-27 |
| 4238222 | Waelz process of volatilizing zinc and lead from iron oxide-containing materials | Harry Serbent, Wolfram Schnabel, Gunter Kossek | 1980-12-09 |
| 4181520 | Process for the direct reduction of iron oxide-containing materials in a rotary kiln | Wolfram Schnabel | 1980-01-01 |