Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861900 | Purification and hydrogenation of sulfolenes | — | 1989-08-29 |
| 4849576 | Pretreatment of butenes | Gerhard P. Nowack, Ted H. Cymbaluk | 1989-07-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861900 | Purification and hydrogenation of sulfolenes | — | 1989-08-29 |
| 4849576 | Pretreatment of butenes | Gerhard P. Nowack, Ted H. Cymbaluk | 1989-07-18 |