Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8048348 | Shape memory polyurethane foam for downhole sand control filtration devices | Paul McElfresh | 2011-11-01 |
| 7926565 | Shape memory polyurethane foam for downhole sand control filtration devices | Paul McElfresh | 2011-04-19 |