Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4286993 | Method and installation for making cement clinker | Bernard Le Bras | 1981-09-01 |
| 4256502 | Method of preparing cement clinker from carboniferous shale | Bernard LeBras, Robert Guyot, Francois Guilmin | 1981-03-17 |
| 4251208 | Process and installations for transferring heat and their applications for the treatment of raw cement | Bernard Le Bras | 1981-02-17 |