Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9765577 | Method for making pipe centralizer having low-friction coating | — | 2017-09-19 |
| 5178769 | Filter for removing liquid hydrocarbons from water and process of removing gaseous and/or hydrocarbons from water | Stewart A. Simpson | 1993-01-12 |
| 5151194 | Filter for removing liquid hydrocarbons from water and process of removing gaseous and/or hydrocarbons from water | Stewart A. Simpson | 1992-09-29 |