| 4963336 |
Purification of APT |
Tom C. Kearns, Eddie C. Chou |
1990-10-16 |
| 4917726 |
Chromium recovery process |
Eddie C. Chou, Charles J. Kucera, Jr., Pandelis N. Papafingos |
1990-04-17 |
| 4900522 |
Separation of nickel and cobalt from sulfate solutions by solvent extraction |
Eddie C. Chou |
1990-02-13 |
| 4810303 |
Production of hexagonal cadmium sulfide pigment |
Guy W. Lussiez, Eddie C. Chou |
1989-03-07 |
| 4761177 |
Production of cobalt and nickel powder |
Eddie C. Chou, Luther R. Tinnin |
1988-08-02 |
| 4551314 |
Process for improving solvent extraction operation using two mixers |
Linn D. Havelick, Robert F. Hogsett |
1985-11-05 |
| 4504448 |
Activated carbon adsorption of flotation reagents from tungsten solutions |
Dennis E. Voelker, Robert F. Hogsett |
1985-03-12 |
| 4490339 |
Process for recovering tungsten from MoS.sub.3 /WS.sub.3 precipitates |
Robert F. Hogsett, Dennis E. Voelker |
1984-12-25 |
| 4450144 |
Ammonium hydroxide stripping of tungsten from organic solvents |
John M. Laferty, Paul B. Queneau |
1984-05-22 |
| 4443415 |
Recovery of V.sub.2 O.sub.5 and nickel values from petroleum coke |
Paul B. Queneau, Robert F. Hogsett, Dale K. Huggins |
1984-04-17 |
| 4397821 |
Precipitation of synthetic scheelite |
Paul B. Queneau |
1983-08-09 |
| 4351808 |
Autoclave soda digestion of scheelite concentrates |
Dale K. Huggins, Paul B. Queneau |
1982-09-28 |
| 4342728 |
Process for digesting tungsten ores containing organic matter |
Paul B. Queneau, Robert F. Hogsett |
1982-08-03 |
| 4338287 |
Process for conditioning tungsten concentrates |
Robert F. Hogsett, Dale K. Huggins |
1982-07-06 |
| 4328190 |
Solvent extraction of tungsten from aqueous tungstate solutions |
Dale K. Huggins |
1982-05-04 |
| 4325919 |
Autoclave soda digestion of scheelite concentrates with feedback control |
Paul B. Queneau, Dale K. Huggins |
1982-04-20 |
| 4320096 |
Combined autoclave soda digestion of wolframite and scheelite |
Paul B. Queneau, Dale K. Huggins |
1982-03-16 |
| 4320095 |
Autoclave soda digestion of refractory scheelite concentrates |
Paul B. Queneau, Dale K. Huggins |
1982-03-16 |
| 4313914 |
Autoclave tungstate upgrading of scheelite concentrates |
Dale K. Huggins, Paul B. Queneau |
1982-02-02 |
| 4311679 |
Treatment of sodium tungstate leach liquor containing dissolved silica, phosphorus, and fluorine impurities |
Paul B. Queneau, Dale K. Huggins |
1982-01-19 |
| 4303622 |
Chemical treatment of low-grade wolframite concentrate having high Mo/WO.sub.3 ratio |
Dale K. Huggins, Paul B. Queneau |
1981-12-01 |
| 4303623 |
Separation of trace molybdenum from tungstate solutions |
Dale K. Huggins, Paul B. Queneau, Robert C. Ziegler, Robert F. Hogsett |
1981-12-01 |