Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8066068 | Heterogeneous proppant placement in a fracture with removable channelant fill | Timothy Lesko, J. Ernest Brown, Dean M. Willberg, Ivan Vitalievich Kosarev | 2011-11-29 |
| 7931089 | Proppant and methods of use | Matthew J. Miller, Dean M. Willberg, Marina Bulova | 2011-04-26 |