Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8079417 | Wireline retrievable dsg/downhole pump system for cyclic steam and continuous steam flooding operations in petroleum reservoirs | Riley B. Needham, David R. Zornes, Partha S. Sarathi | 2011-12-20 |
| 6279653 | Heavy oil viscosity reduction and production | David R. Zornes, Daniel R. Maloney, Michael E. Vienot, Michael Fraim | 2001-08-28 |
| 6186228 | Methods and apparatus for enhancing well production using sonic energy | Daniel R. Maloney, David R. Zornes, Dave E. Reese, Michael Fraim | 2001-02-13 |
| 4726759 | Method and apparatus for stimulating an oil bearing reservoir | — | 1988-02-23 |