Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372881 | Thermoformable polyolefin sheet | William R. Roller, Jay P. Porter, Ame P. Krueger | 1994-12-13 |
| 4795574 | Low temperature breakers for gelled fracturing fluids | Allen R. Syrinek | 1989-01-03 |