Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8916508 | Drag-reducing copolymer compositions | Earl Parnell, Todd Sanner, Marlin D. Holtmyer, David Philpot, Andrei Zelenev +2 more | 2014-12-23 |
| 8865632 | Drag-reducing copolymer compositions | Earl Parnell, Todd Sanner, Marlin D. Holtmyer, David Philpot, Andrei Zelenev +2 more | 2014-10-21 |