Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5972827 | Catalytic oxychlorination of hydrocarbons to produce chlorocarbons | Alain Petit, Rene Clair, Yves Correia | 1999-10-26 |
| 5817588 | Ceramic preforms comprising monocrystalline hexagonal platelets of alpha-alumina | Annick Faure | 1998-10-06 |
| 5688730 | Optically transparent gamma-aluminum oxynitride powders and ceramic articles shaped therefrom | Jean-Pierre Disson, Bruno Morlhon | 1997-11-18 |
| 5674465 | Continuous process for the preparation of aluminum nitride by the carbonitriding of alumina | Pierre Ravenel, Jean-Pierre Disson, Philippe Joubert | 1997-10-07 |
| 5662875 | Continuous process for the preparation of silicon nitride by carbonitriding and silicon nitride thereby obtained | Jean-Pierre Disson, Bruno Morlhon | 1997-09-02 |
| 5612267 | Ceramic preforms comprising monocrystalline hexagonal platelets of .alpha.- a | Annick Faure | 1997-03-18 |
| 5538705 | Carbonitriding of alumina to produce aluminum nitride | Pierre Ravenel, Jean-Pierre Disson | 1996-07-23 |
| 5525321 | Carbonitriding of alumina to produce aluminum nitride | Pierre Ravenel | 1996-06-11 |
| 5378666 | Production of whisker-free Si.sub.3 N.sub.4 particulates by carbonitriding SiO.sub.2 | Jean-Pierre Disson | 1995-01-03 |
| 5296085 | Macrocrystalline .alpha.-alumina hexagonal platelets | Annick Faure | 1994-03-22 |
| 5243111 | Catalytic oxychlorination of hydrocarbons to produce chlorocarbons | Alain Petit, Rene Clair, Yves Correia | 1993-09-07 |
| 4871479 | Process for producing sintered mixed oxides which are soluble in nitric acid from solutions of nitrates | Patrick Germanaz | 1989-10-03 |
| 4851203 | Metal carbide and nitride powders | Philippe Joubert | 1989-07-25 |
| 4784839 | Method of making metal carbide and nitride powders | Philippe Joubert | 1988-11-15 |
| 4687601 | Process for the preparation of pulverulent metallic oxides from metallic nitrates | Philippe Joubert | 1987-08-18 |
| 4585634 | Process for the production of uranium trioxide having a large specific surface from hydrated uranyl nitrate | Pierre Lakodey | 1986-04-29 |
| 4532121 | Process for the preparation of finely divided aluminas or alumina-magnesia spinels having homogeneous pore structure | Maurice Lamalle | 1985-07-30 |
| 4486402 | Process for the preparation of high purity aluminas starting from impure aluminum chloride solutions | Bernard Gurtner, Robert Barral | 1984-12-04 |
| 4377566 | Novel process for the preparation of high purity alumina from ammonium alum | Robert Barral | 1983-03-22 |