Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7449049 | Method of purifying a natural gas by mercaptan adsorption | Michel Thomas, Eszter Toth, Fabrice Lecomte, Jean-Louis Ambrosino | 2008-11-11 |
| 6521782 | Method for making aqueous solutions of unsaturated quaternary ammonium salts | Alain Riondel, Gilles Herbst, Marc Esch, Eric Delaunay | 2003-02-18 |
| 4921906 | Process for the preparation of a homogeneous thermoplastic polymer | Reinard Jozef Maria Steeman | 1990-05-01 |
| 4772671 | Process for the preparation of a thermoplastic polymer | Reinard Jozef Maria Steeman | 1988-09-20 |
| 4404391 | Method for the preparation of N-methyl and -N-ethyl-1-pyrrolidones | Josef M. Penders | 1983-09-13 |
| 4325872 | Process for the preparation of a 2-pyrrolidone | Johannes G. M. Nieuwkamp | 1982-04-20 |
| 4267362 | Process for the preparation of delta keto-acids and derivatives thereof | Josef M. Penders | 1981-05-12 |