Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357316 | Electrophotographic copying device | — | 1994-10-18 |
| 4297330 | Process of selectively desulfurizing gases | Johann Schlauer, Alexander Doerges | 1981-10-27 |
| 4258019 | Process of regenerating alkali carbonate solutions formed by the desulfurization of hot gases | Heinz Hiller, Johann Schlauer, Alexander Doerges, Vaclav Svoboda, Winfried Zeschmar | 1981-03-24 |