Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849204 | Catalytic removal of hydrogen sulfides from liquid sulfur | Andre Pepy | 1989-07-18 |
| 4814159 | Catalytic process for the production of sulphur from a gas containing H.sub. S | — | 1989-03-21 |