Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836999 | Method for controlling claus furnace with variable hydrocarbon feed composition | David A. Holdeman | 1989-06-06 |
| 4822591 | Two-reactor, high-recovery sulfur plant and process | John W. Palm | 1989-04-18 |