Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6284288 | Use of silica as agent for controlling the degradation of bicarbonate, resulting mixture and its application | Michel Seguin | 2001-09-04 |
| 6114274 | Preparation of aliphatic carboxylic acids in the presence of heteropolyacid catalysts | Elisabeth Bordes, Laurent Tessier | 2000-09-05 |
| 6018057 | Process for producing acid anhydrides | Michel Alas, Jean-Michel Popa | 2000-01-25 |
| 5905168 | Process for treating a material comprising a polymer by hydrolysis | Emmanuel Dos Santos, Pascal Mettvier | 1999-05-18 |
| 5750777 | Process for the preparation of carboxylic acids by controlled oxidation of the corresponding alkanes | Alain Aubry, Anne-Marie Le Govic | 1998-05-12 |
| 5352819 | Dehydrocyanation of aliphatic dinitriles | Christian Maliverney, Helene Pernot | 1994-10-04 |
| 5288906 | Preparation of p-aminophenols | Christian Maliverney | 1994-02-22 |
| 5274145 | .alpha.-hydroxy-acids, preparation process and the use thereof | — | 1993-12-28 |
| 5260456 | Process for producing itaconic anhydride | Michel Alas, Jean-Michel Popa | 1993-11-09 |
| 5254746 | Hydroxylation of phenols/phenol ethers | Michel Costantini, Jean-Michel Popa | 1993-10-19 |
| 5149888 | Hydroxylation of phenols/phenol ethers | Michel Costantini, Eric Garcin, Jean-Michel Popa | 1992-09-22 |
| 5132468 | C-alkylation of hydroquinone or monoethers thereof | Claude Doussain, Philippe-Jean Tirel | 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 | Philippe-Jean Tirel, Claude Doussain, Helene Pernot, Laurent Gilbert, Jean-Michel Popa | 1992-06-02 |
| 5082978 | Selective monomethylation of phenolic compounds | Christian Allandrieu | 1992-01-21 |
| 5068391 | Preparation of methylenedi (phenylurethane) | Christophe Rochin, Christian Allandrieu | 1991-11-26 |
| 5066827 | Preparation of methylenedi(phenylurethane) | Christophew Rochin, Christian Allandrieu | 1991-11-19 |
| 5055623 | Preparation of phenols by direct N.sub.2 O hydroxylation of aromatic substrates | Jean-Michel Popa, Philipe-Jean Tirel | 1991-10-08 |
| 5043494 | Preparation of methylhydroquinone | Christian Allandrieu | 1991-08-27 |
| 5019657 | Process for the preparation of halophenols | Philippe-Jean Tirel | 1991-05-28 |
| 5003114 | Hydroxylation of phenols/phenol ethers | Michel Costantini, Jean-Pierre Lecomte, Jean-Michel Popa | 1991-03-26 |
| 5001280 | Preparation of phenol by direct hydroxylation of benzene | Philippe-Jean Tirel | 1991-03-19 |
| 4996376 | Preparation of dinitrotoluenes | Claude Doussain, Jean-Michel Popa | 1991-02-26 |
| 4982013 | Preparation of polyhydroxybenzenes by direct hydroxylation of phenols | Philippe-Jean Tirel | 1991-01-01 |
| 4950809 | Process for preparing hydroxylated aromatic derivatives by the Baeyer-Villiger reaction | — | 1990-08-21 |
| 4950811 | Process for the preparation of trifluoro-ethanol by hydrolysis, in the gas phase, of chlorotrifluoroethane | Claude Doussain, Philippe-Jean Tirel | 1990-08-21 |