Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4905614 | Method for thermic disposal of waste materials | Wolfgang Grigel, Heinz-Dieter Waldhecker, John Rizzon, Kariheinz Passler | 1990-03-06 |
| 4469664 | Method for reducing the concentration of sulfur compounds in a system for calcining fine grained materials | Andris Abelitis | 1984-09-04 |