Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849202 | Sulfur recovery process using metal oxide absorbent with reducing gas purge | — | 1989-07-18 |
| 4797268 | Sulfur recovery process using metal oxide absorbent with regenerator recycle to Claus catalytic reactor | John J. McGovern, Paul T. Pendergraft | 1989-01-10 |