Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5676921 | Method for the recovery of elemental sulfur from a gas mixture containing H.sub.2 S | Freimut Marold, Martin Gwinner | 1997-10-14 |
| 5660807 | Process for the removal of HCN from gas mixtures | Wolfgang Forg, Gerhard Ranke, Dietrich Maschmeyer, Robert J. Walter | 1997-08-26 |
| 5628977 | Process for the desulfurization of a crude gas containing H.sub.2 S | Freimut Marold | 1997-05-13 |