Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7025899 | Concentrated solutions of oxime metal extractants and method of formulating extractant compositions therefrom | R. Brantley Sudderth, George A. Wolfe, Ralph L. Jensen, Gary A. Kordosky, Michael J. Virnig +3 more | 2006-04-11 |
| 6432166 | Dust control | Michael J. Virnig, G. Timothy Fisher | 2002-08-13 |
| 6395062 | Process for recovery of metals from metal-containing ores | G. Timothy Fisher, Michael J. Virnig | 2002-05-28 |
| 6177055 | Process for extracting and recovering copper | Michael J. Virnig, Reuben H. Grinstein, R. Brantley Sudderth, George A. Wolfe | 2001-01-23 |
| 6156280 | Process for removing manganese from organic solutions of oximes and nickel ore treatment process | Michael J. Virnig, Burrel Boley | 2000-12-05 |
| 5788844 | Process for removing and recovering ammonia from organic metal extractant solutions in a liquid-liquid metal extraction process | — | 1998-08-04 |
| 5470552 | Nickel extraction process | Gary A. Kordosky | 1995-11-28 |
| 5196095 | Process for recovering a metal from an aqueous solution comprising a mixture of metal chlorides | Robert B. Sudderth, Archibald W. Fletcher | 1993-03-23 |
| 4957714 | Solvent extraction process | Roy G. Lewis, Gary A. Kordosky | 1990-09-18 |