Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867773 | Cryogenic process for nitrogen production with oxygen-enriched recycle | Robert M. Thorogood, Thomas M. Roden | 1989-09-19 |
| 4861351 | Production of hydrogen and carbon monoxide | David M. Nicholas, Joseph P. Bushinsky | 1989-08-29 |
| 4857082 | Membrane unit turn-down control system | Stephen Paul DiMartino, Sr., Ruth A. Davis | 1989-08-15 |