| 9789889 |
Slack adjuster for narrow gauge railroad cars |
Brian Graves, Jeffrey F. Sauter, Derick Call |
2017-10-17 |
| 7514050 |
Processing of acid-consuming mineral materials involving treatment with acidic biooxidation effluent |
Fritz-Peter Sawyer |
2009-04-07 |
| 6696283 |
Particulate of sulfur-containing ore materials and heap made therefrom |
David L. Hill |
2004-02-24 |
| 6383458 |
Biooxidation process for recovery of metal values from sulfur-containing ore materials |
David L. Hill |
2002-05-07 |
| 5834294 |
Biooxidation process for recovery of metal values from sulfur-containing ore materials |
David L. Hill |
1998-11-10 |
| 5332559 |
Biooxidation process for recovery of metal values from sulphur-containing ore materials |
David L. Hill |
1994-07-26 |
| 5246486 |
Biooxidation process for recovery of gold from heaps of low-grade sulfidic and carbonaceous sulfidic ore materials |
David L. Hill |
1993-09-21 |
| 5244493 |
Biometallurgical treatment of precious metal ores having refractory carbon content |
Charles F. Kulpa |
1993-09-14 |
| 5127942 |
Microbial consortium treatment of refractory precious metal ores |
Charles F. Kulpa |
1992-07-07 |
| 4992179 |
Metal recovery |
Corale L. Brierley, Raymond F. Decker, George M. Goyak |
1991-02-12 |
| 4898827 |
Metal recovery |
Corale L. Brierley, Raymond F. Decker, George M. Goyak |
1990-02-06 |
| 4789481 |
Metal recovery |
Corale L. Brierley, Raymond F. Decker, George M. Goyak |
1988-12-06 |
| 4729788 |
Thermophilic microbial treatment of precious metal ores |
Stephen Hutchins, Michael S. Davidson, Corale L. Brierley |
1988-03-08 |
| 4690894 |
Treatment of microorganisms with alkaline solution to enhance metal uptake properties |
Corale L. Brierley, Raymond F. Decker, George M. Goyak |
1987-09-01 |