Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11608274 | Alkali metal cyanide production | Michael Lefenfeld, Robert Hoch, Justin Manganaro, Si Kai Tan | 2023-03-21 |
| 5676846 | Process for the detoxification of effluents containing free or complexed cyanides | Gregg A. Vickell, Jaganmay Chattopadhyay | 1997-10-14 |
| 5178775 | Cost effective process for detoxification of cyanide-containing effluents | M. Quamrul Ahsan, Stephen Gos, Helmut Knorre, Friedrich W. Merz | 1993-01-12 |
| 4966715 | Process for the removal of cyanide from wastewaters | M. Quamrul Ahsan, Andrew Griffiths, Ernest Haug | 1990-10-30 |
| 4915849 | Process for the treatment of effluents containing cyanide and other oxidizable substances | Andrew Griffiths, M. Quamrul Ahsan, Helmut Knorre, Friedrich W. Merz | 1990-04-10 |
| 4851129 | Process for the detoxification of effluents from ore processing operations with hydrogen peroxide, using a magnetic pre-separation stage | Andrew Griffiths | 1989-07-25 |
| 4822496 | Process for the treatment of effluent containing cyanide and toxic metals, using hydrogen peroxide and trimercaptotriazine | Andrew Griffiths, Gerhard Scherer, Friedrich W. Merz, Stephen Gos | 1989-04-18 |