Hard; Robert A
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hard; Robert A.The latest application filed is for "method for solubilizing metal values".
- Hard; Robert A - Hallowell ME
- Hard; Robert A - Hollowell ME
- Hard; Robert A. - Hollowell ME
- Hard; Robert A. - Hallowell ME
- Hard; Robert A. - Oley PA
- Hard; Robert A. - Laguna CA
- Hard; Robert A. - Laguna Beach CA
- Hard; Robert A. - Still River MA
- Hard; Robert A. - Lewiston NY
| Patent | Date |
|---|---|
| Recovery of metal values Grant 7,282,187 - Brown , et al. October 16, 2 | 2007-10-16 |
| Method for solubilizing metal values Grant 6,979,429 - Hard , et al. December 27, 2 | 2005-12-27 |
| Process for recovering metal values by dissolving them in a sulfuric acid solution containing a carbon source and a reducing agent Grant 6,843,970 - Hard January 18, 2 | 2005-01-18 |
| Methods to control H2S and arsine emissions Grant 6,800,259 - Hard October 5, 2 | 2004-10-05 |
| Method for solubilizing metal values App 20030170158 - Hard, Robert A. ; et al. | 2003-09-11 |
| Methods to control H2S and arsine emissions App 20030165416 - Hard, Robert A. | 2003-09-04 |
| Dispersible, metal oxide-coated, barium titanate materials App 20010048969 - Constantino, Stephen A. ; et al. | 2001-12-06 |
| Dispersible, metal oxide-coated, barium titanate materials App 20010046603 - Constantino, Stephen A. ; et al. | 2001-11-29 |
| Dispersible, metal oxide-coated, barium titanate materials Grant 6,268,054 - Costantino , et al. July 31, 2 | 2001-07-31 |
| Controlling the oxygen content in tantalum material Grant 4,960,471 - Fife , et al. October 2, 1 | 1990-10-02 |
| Method for deoxidizing tantalum material Grant 4,722,756 - Hard February 2, 1 | 1988-02-02 |
| Recovering metal values from geothermal brine Grant 4,602,820 - Hard July 29, 1 | 1986-07-29 |
| Process for making titanium, zirconium and hafnium-based metal particles for powder metallurgy Grant 4,470,847 - Hard , et al. September 11, 1 | 1984-09-11 |
| Process for making titanium metal from titanium ore Grant 4,390,365 - Hard , et al. June 28, 1 | 1983-06-28 |
| Process for reducing phosphate ore Grant 4,389,384 - Hard June 21, 1 | 1983-06-21 |
| In-situ method and apparatus for sparging gas bubbles Grant 4,360,234 - Hsueh , et al. November 23, 1 | 1982-11-23 |
| Process for making titanium oxide from titanium ore Grant 4,359,449 - Hard , et al. November 16, 1 | 1982-11-16 |
| Recovery of shale oil and magnesia from oil shale Grant 4,171,146 - Hard October 16, 1 | 1979-10-16 |
| In-situ mining method and apparatus Grant 4,116,488 - Hsueh , et al. September 26, 1 | 1978-09-26 |
| Stimulation of recovery from underground deposits Grant 3,896,879 - Sareen , et al. July 29, 1 | 1975-07-29 |
| Process For Leaching Base Elements, Such As Uranium Ore, In Situ Grant 3,708,206 - Hard , et al. January 2, 1 | 1973-01-02 |
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