Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4618458 | Sulphonic acids and sulphonates | Marcel Prillieux, Robert M. Laurent | 1986-10-21 |
| 4411806 | Antifoam additives | Alain Louis Pierre Lenack | 1983-10-25 |
| 4387033 | Calcium sulphonate process | Alain Louis Pierre Lenack | 1983-06-07 |
| 4259193 | Overbased sulphonates | Robert M. Laurent | 1981-03-31 |
| 4239634 | Lubricating oil containing a surface active agent | Pierre D. Marin, Marcel Prillieux | 1980-12-16 |
| 4235810 | Alkylates and sulphonic acids and sulphonates produced therefrom | Andre Osselet | 1980-11-25 |