Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6225502 | Use of an aniline depleted in electron to release hydrochloric acid present in a reaction mixture and method for displacing, at least partially, an aniline from its chlorhydrate | Alain Roustan | 2001-05-01 |
| 6194616 | Acylation method for an aromatic compound | Michel Spagnol, Laurent Gilbert, Henri Guillot | 2001-02-27 |
| 5786520 | O-alkylation of phenolic compounds via rare earth orthophosphate catalysts | Laurent Gilbert, Marcelle Janin, Anne-Marie Le Govic | 1998-07-28 |
| 5670659 | Preparation of citraconic anhydride | Michel Alas, Alain Sigismondi | 1997-09-23 |
| 5132468 | C-alkylation of hydroquinone or monoethers thereof | Claude Doussain, Michel Gubelmann | 1992-07-21 |
| 5118651 | Chemical compound containing alkali metals or alkaline earth metals, catalyst containing the compound and process for the production of the catalyst | Michel Gubelmann, Claude Doussain, Helene Pernot, Laurent Gilbert, Jean-Michel Popa | 1992-06-02 |
| 5019657 | Process for the preparation of halophenols | Michel Gubelmann | 1991-05-28 |
| 5001280 | Preparation of phenol by direct hydroxylation of benzene | Michel Gubelmann | 1991-03-19 |
| 4982013 | Preparation of polyhydroxybenzenes by direct hydroxylation of phenols | Michel Gubelmann | 1991-01-01 |
| 4950811 | Process for the preparation of trifluoro-ethanol by hydrolysis, in the gas phase, of chlorotrifluoroethane | Claude Doussain, Michel Gubelmann | 1990-08-21 |