Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4618458 | Sulphonic acids and sulphonates | Robert M. Laurent, Robert Tirtiaux | 1986-10-21 |
| 4239634 | Lubricating oil containing a surface active agent | Pierre D. Marin, Robert Tirtiaux | 1980-12-16 |