Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6833479 | Antimisting agents | Mark Witschger, Jianhua Mao, Michael J. Virnig, Marie-Esther Saint Victor | 2004-12-21 |
| 6702872 | Processes for the recovery of copper from aqueous solutions containing nitrate ions | Michael J. Virnig, Hans C. Hein | 2004-03-09 |