Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6013196 | Process and products for deodorising gaseous cooking effluents | Jean Morlec | 2000-01-11 |
| 5602291 | Process for isomerizing C.sub.5 /C.sub.6 normal paraffins with recycling normal paraffins and methyl-pentanes | Ari Minkkinen, Jean-Paul Cariou | 1997-02-11 |
| 5071452 | Gas separation membrane | Rene Avrillon, Alain Driancourt, Jean-Claude Mileo, Eric Robert | 1991-12-10 |
| 5059569 | Process and catalyst for selective reduction of nitrogen oxides | Claude Dezael, Claude Roux-Guerraz, Christine Travers | 1991-10-22 |
| 4925459 | Process for separation of the constituents of a mixture in the gas phase using a composite membrane | Alexandre Rojey, Alain Grehier, Eric Robert | 1990-05-15 |
| 4855117 | Process for removing sulfur oxides from a gas by means of an absorption mass regenerable by reaction with elemental sulfur | Sigismond Franckowiak, Serge Leporq | 1989-08-08 |
| 4781903 | Process for removing sulfur oxides from a gas by means of an absorption mass regenerable by reaction with elemental sulfur | Sigismond Franckowiak, Serge Leporq | 1988-11-01 |
| 4725417 | Process for removing sulfur oxides from a gas by means of an absorption mass regenerable by reaction with hydrogen sulfide | Claude Dezael, Michel Roussel | 1988-02-16 |
| 4609456 | Process for converting heavy petroleum residues to hydrogen and gaseous distillable hydrocarbons | Claude Dezael, Sigismond Franckowiak | 1986-09-02 |
| 4519895 | Process for converting a carbonaceous material to lower paraffinic hydrocarbons and monocyclic aromatic hydrocarbons | Sigismond Franckowiak | 1985-05-28 |
| 4505880 | Process for the hydrodesulfurization and deoxygenation of a gas containing oxygen and organic sulfur compounds | Jean Cosyns, Jean-Francois Le Page, Gerard Hotier | 1985-03-19 |
| 4460553 | Process for the hydrodesulfurization of natural gas containing organic sulfur compounds and oxygen | Jean Cosyns, Jean-Francois Le Page | 1984-07-17 |
| 4405442 | Process for converting heavy oils or petroleum residues to gaseous and distillable hydrocarbons | Sigismond Franckowiak, Jean-Francois Le Page | 1983-09-20 |
| 4310497 | Process for purifying a hydrogen sulfide containing gas | Claude Dezael, Sigismond Franckowiak, Henri Gruhier | 1982-01-12 |
| 4277458 | Process for oxidizing sulfur and sulfur compounds | Andre Sugier, Philippe Courty, Henri Gruhier | 1981-07-07 |
| 4251495 | Process for purifying a hydrogen sulfide containing gas | Sigismond Franckowiak, Andre Sugier | 1981-02-17 |
| 4220634 | Process for converting ammonium imidodisulfate, ammonium sulfamate and ammonium dithionate to sulfur dioxide and ammonia | Claude Dezael, Sigismond Franckowiak, Henri Gruhier | 1980-09-02 |
| 4197277 | Process for oxidizing sulfur and sulfur compounds | Andre Sugier, Philippe Courty, Henri Gruhier | 1980-04-08 |