Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6635780 | Chemical processes | Michel Casado, Patrick Ratton, Agnès Viauvy | 2003-10-21 |
| 5189218 | Preparation of n-phenylbenzoquinone-imine and converting same into p-phenylenediamines | Jean-Roger Desmurs, Hubert Kempf, Serge Ratton | 1993-02-23 |