Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5704958 | Process for the treatment of a glass to reduce its wettability by gallium and an apparatus produced from such a treated glass | Hubert Lauvray, Jean-Charles Maurice | 1998-01-06 |
| 5593651 | Conversion of SO.sub.2 gaseous effluents into solutions of ammonium or alkali/alkaline earth metal bisulfites | Jean-Yves Chane-Ching, Gerard Hustache | 1997-01-14 |
| 5266282 | Selective liquid/liquid extraction of yttrium from other rare earths values | Thierry Delloye | 1993-11-30 |
| 5204074 | Recovery of gallium values from basic aqueous solutions thereof | Yvette Pescher | 1993-04-20 |
| 5192443 | Separation of rare earth values by liquid/liquid extraction | Thierry Delloye | 1993-03-09 |
| 5188735 | Separation of rare earth values by liquid/liquid extraction | Thierry Delloye | 1993-02-23 |
| 5049279 | Selective extraction of amino acids | Marie-Christine Bitar, Paul Aviron-Viollet | 1991-09-17 |
| 5006254 | Reducing the radium radioactivity of aqueous effluents | Francinet Cailly, Alain Leveque | 1991-04-09 |
| 4964997 | Liquid/liquid extraction of rare earth/cobalt values | Alain Leveque, Richard Fitoussi | 1990-10-23 |
| 4938852 | Recovery of europium (II) values by electrolysis | Jean-Yves Dumousseau, Alain Rollat | 1990-07-03 |
| 4844808 | Liquid/liquid extraction of gallium values | Richard Fitoussi | 1989-07-04 |
| 4834952 | Purification of barium values | Alain Rollat | 1989-05-30 |
| 4818504 | Purified, strontium-free barium values | Thierry Delloye | 1989-04-04 |
| 4726938 | Liquid/liquid extraction/purification of impure solutions of rare earth values | Alain Rollat, Michel Burgard, Thierry Delloye | 1988-02-23 |
| 4647438 | Separation of rare earth values by liquid/liquid extraction | Alain Rollat | 1987-03-03 |
| 4559203 | Liquid/liquid extraction of gallium values from basic aqueous solutions thereof | Denise Bauer, Patrick Fourre | 1985-12-17 |
| 4499058 | Liquid/liquid extraction of acidic aqueous streams comprising sulfate/titanium/iron values | Richard Fitoussi, Alain Leveque | 1985-02-12 |
| 4485076 | Liquid/liquid extraction of gallium values from basic aqueous solutions thereof | Denise Bauer, Patrick Fourre | 1984-11-27 |
| 4483801 | Preparation of sulfonated triarylphosphines | — | 1984-11-20 |
| 4461748 | Liquid-liquid extraction of rare earth/uranium/thorium values | Alain Leveque | 1984-07-24 |