Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8534359 | Leach recovery of oil from oil sands and like host materials | — | 2013-09-17 |
| 8454915 | Selective leach recovery of minerals from composite ores | Madhav Dahal | 2013-06-04 |
| 6517701 | Lead, zinc and manganese recovery from aqueous solutions | — | 2003-02-11 |
| 5523066 | Treatment of lead sulphide bearing minerals | Ira E. Puddington | 1996-06-04 |
| 4966761 | Process for treatment of flyash | Vaikuntam I. Lakshmanan, Dzinsars Melnbardis, Nairn M. McQueen | 1990-10-30 |
| 4798709 | Process for treatment of flyash | Vaikuntam I. Lakshmanan, Dzinsars Melnbardis | 1989-01-17 |