Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7217408 | Solubilisation of carbonates by recycling condensates during digestion of monohydrate bauxites under pressure | Odissefs Keramidas, Raymond Roumieu | 2007-05-15 |
| 6983060 | Method to measure degree and homogeneity of alumina calcination | Valerie Martinent-Catalot, Bernard Rouit | 2006-01-03 |
| 6296818 | Method for processing bauxite rich in alumina monohydrate | — | 2001-10-02 |
| 6110377 | Process for recovering the sodium contained in industrial alkaline waste | — | 2000-08-29 |
| 5916536 | Production of calcined alumina with a crystallite size which can be regulated with a narrow dispersion | Jean Deville | 1999-06-29 |
| 5653947 | Method of treating alumina trihydrate containing bauxite of low reactive silica content to form supersaturated sodium aluminate liquor | — | 1997-08-05 |
| 5628972 | Process for removing iron in sodium aluminate liquors obtained from alkaline attack of bauxite containing alumina monohydrate | Jean Deville | 1997-05-13 |
| 5424050 | Process for extracting gallium from bayer liquors using an impregnated absorbent resin | — | 1995-06-13 |
| 5245116 | Process for the wet treatment of spent pot linings from hall-heroult electrolytic cells | Jean-Claude Bontron, Pierre Personnet | 1993-09-14 |
| 5102512 | Process for extracting and purifying gallium from bayer liquors | — | 1992-04-07 |
| 4634579 | Selective removal of arsenical material in the course of an alkaline process for treating a uraniferous and/or molybdeniferous ore by means of a magnesium compound | Pierre Maurel, Francois Pallez | 1987-01-06 |
| 4613361 | High-temperature pretreatment by means of an alkaline aqueous solution of ores having an argillaceous gangue containing at least one usable element | Francois Pallez, Pierre Personnet | 1986-09-23 |