Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6632410 | Solvent extraction process | Sang I. Kang, Michael J. Virnig, R. Brantley Sudderth, George A. Wolfe | 2003-10-14 |
| 6596053 | Processes for the recovery of copper from aqueous solutions containing nitrate ions | Michael J. Virnig, Hans C. Hein | 2003-07-22 |
| 6586632 | Preparation of quaternary ammonium compounds | Patrick M. McCurry, Jr. | 2003-07-01 |