Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4242246 | Process for the preparation of bituminous compositions making use of a mother solution containing polymers and sulfur | Henri Dayre, Germain Hagenbach | 1980-12-30 |
| 4237052 | Method for the preparation of bitumens modified by polymers | Fredj Fitoussi | 1980-12-02 |