Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840748 | Polyalkanolamines | Eva G. Lovett | 1989-06-20 |
| 4818410 | Method of removing water soluble organics from oil process water | Roy W. Greenlee, Frederick T. Welge | 1989-04-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840748 | Polyalkanolamines | Eva G. Lovett | 1989-06-20 |
| 4818410 | Method of removing water soluble organics from oil process water | Roy W. Greenlee, Frederick T. Welge | 1989-04-04 |