Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857211 | Cleaning of filter surfaces | Louis Rivoirard | 1989-08-15 |
| 4850426 | Gas/liquid heat exchanger with condensation | Lucien Fayolle, Patrick Mangin | 1989-07-25 |
| 4568461 | Apparatus for distributing a substance over a surface | Jean Aoustin, Bernard Wallon | 1986-02-04 |
| 4557915 | Production of phosphoric acid | — | 1985-12-10 |
| 4545788 | Process and apparatus for discharging and degassing a slurry from an attack tank | — | 1985-10-08 |
| 4369169 | Pretreatment of crude wet process phosphoric acid | Jean Boutin, Maurice Chambon | 1983-01-18 |