Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4676870 | Automatic control of a multiple-effect evaporator | William S. Stewart, John D. Hottovy | 1987-06-30 |
| 4621062 | Control of an isomerization process | William S. Stewart | 1986-11-04 |
| 4545894 | Control of an aromatic extraction | William S. Stewart | 1985-10-08 |