Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7785080 | Downhole ram pump | — | 2010-08-31 |
| 7503385 | Single line control module for well tool actuation | Robert William Gissler | 2009-03-17 |
| 7484566 | Pulse width modulated downhole flow control | Mitchell C. Smithson | 2009-02-03 |
| 7242103 | Downhole electrical power generator | — | 2007-07-10 |
| 7240737 | Direct proportional surface control system for downhole choke | — | 2007-07-10 |
| 6659184 | Multi-line back pressure control system | Brett W. Bouldin, Richard P. Rubbo | 2003-12-09 |
| 5775429 | Downhole packer | Napoleon Arizmendi | 1998-07-07 |
| 5316084 | Well tool with sealing means | Douglas J. Murray, Robert Coon, Mark E. Hopmann, Ronald D. Williams, Steve Jennings | 1994-05-31 |