Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4971777 | Process for the removal of acid components and nitrogen oxides from the waste gases of industrial furnaces | Bernhard Firnhaber, Karl Schmid, Cort Starck, Richard Wenderoth, Rolf Wetzel +1 more | 1990-11-20 |
| 4612173 | Method of purifying by-product gypsum | Karl-Heinz Franke, Jorg Kohlbecker, Bahram Dormichian | 1986-09-16 |