Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5913893 | Process for the purification of a cryogenic fluid by filtration and/or adsorption | Rene Lardeau, Philippe Fraysse, Frederic Castellanet | 1999-06-22 |
| 5891220 | O.sub.2 /CO removal from an inert gas by adsorption on porous metal oxide | — | 1999-04-06 |
| 5874007 | Purification of an inert fluid in the liquid state with respect to H.sub.2 and/or CO | — | 1999-02-23 |
| 5857356 | Process for the purification of a cryogenic fluid by filtration and/or adsorption | Rene Lardeau, Philippe Fraysse, Frederic Castellanet | 1999-01-12 |
| 5836172 | Process for the purification of a cryogenic fluid by filtration and/or adsorption | Rene Lardeau, Philippe Fraysse, Frederic Castellanet | 1998-11-17 |
| 5784898 | Process and device for the preparation of a cry ogenic fluid in the high purity liquid state | — | 1998-07-28 |
| 5693302 | Process for the removal of an impurity contained in a composite gas | — | 1997-12-02 |
| 5685172 | Process and device for the preparation of a flow which is substantially purified with respect to at least one of the impurities oxygen and carbon monoxide | Bernard Darredeau, Christiane Muller | 1997-11-11 |
| 5662873 | Process for the elimination of impurities contained in a gaseous compound | — | 1997-09-02 |
| 5589151 | Process for the preparation of high-purity liquid nitrogen | — | 1996-12-31 |
| 5478534 | Apparatus for preparing ultra-pure nitrogen | Jean Louise, Bertrand Mollaret, Jean-Yves Thonnelier | 1995-12-26 |
| 5238670 | Process for preparing ultra-pure nitrogen | Jean Louise, Bertrand Mollaret, Jean-Yves Thonnelier | 1993-08-24 |
| 4836242 | Pressure reducer for pure gases | Eric Coffre, Christophe di Giulio, Gerard Loiseau, Gerard Torelli | 1989-06-06 |