Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6231784 | Water insoluble composition of an aldoxime extractant and an equilibrium modifier | Michael J. Virnig, Phillip L. Mattison, Leroy O. Krbechek | 2001-05-15 |
| 6210647 | Process of recovery of metals from aqueous ammoniacal solutions employing an ammonia antagonist having only hydrogen bond acceptor properties | Michael J. Virnig, Gary A. Kordosky, George A. Wolfe | 2001-04-03 |
| 5976218 | Process for the recovery of nickel | Michael J. Virnig | 1999-11-02 |
| 5968364 | Process for the removal of toxic cyanide and heavy metal species from alkaline solutions | Michael J. Virnig, Phillip L. Mattison, George A. Wolfe, J. Michael Sierakoski, Keith Weerts | 1999-10-19 |
| 5670035 | Method for recovering copper | Michael J. Virnig | 1997-09-23 |