Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6018057 | Process for producing acid anhydrides | Michel Alas, Michel Gubelmann | 2000-01-25 |
| 6005145 | Metallic compounds useful as catalysts | Georges Cordier | 1999-12-21 |
| 5973210 | Intermetallic ruthenium tin-catalyst for use in aldehyde synthesis | Roland Jacquot, Jean-Marc LeClercq, Claude Mercier | 1999-10-26 |
| 5399336 | Stannozeosilite/zirconozeosilite zeolites and catalytic hydroxylation of phenolics therewith | Jean-Louis Guth, Michel Costantini, Annie Lopez | 1995-03-21 |
| 5380691 | Catalytic microporous zirconia particulates | — | 1995-01-10 |
| 5260456 | Process for producing itaconic anhydride | Michel Alas, Michel Gubelmann | 1993-11-09 |
| 5254746 | Hydroxylation of phenols/phenol ethers | Michel Costantini, Michel Gubelmann | 1993-10-19 |
| 5246688 | Production of silica-based MFI zeolites | Anne-Catherine Faust, Jean-Louis Guth, Frederique Hoffner | 1993-09-21 |
| 5208196 | Aluminum bridged clays | Alain Aubry | 1993-05-04 |
| 5160496 | Hydroxylation of phenols/phenol ethers | Michel Constantini | 1992-11-03 |
| 5149888 | Hydroxylation of phenols/phenol ethers | Michel Costantini, Eric Garcin, Michel Gubelmann | 1992-09-22 |
| 5118651 | Chemical compound containing alkali metals or alkaline earth metals, catalyst containing the compound and process for the production of the catalyst | Michel Gubelmann, Philippe-Jean Tirel, Claude Doussain, Helene Pernot, Laurent Gilbert | 1992-06-02 |
| 5082641 | Silicon/titanium oxide MFI zeolites | Jean-Luc Guth, Henri Kessler | 1992-01-21 |
| 5055623 | Preparation of phenols by direct N.sub.2 O hydroxylation of aromatic substrates | Michel Gubelmann, Philipe-Jean Tirel | 1991-10-08 |
| 5003114 | Hydroxylation of phenols/phenol ethers | Michel Costantini, Michel Gubelmann, Jean-Pierre Lecomte | 1991-03-26 |
| 4996376 | Preparation of dinitrotoluenes | Claude Doussain, Michel Gubelmann | 1991-02-26 |
| 4976944 | Purification of silane gas | Bernard Pacaud, Claude-Bernard Cartier | 1990-12-11 |