Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7963326 | Method and apparatus for utilizing pressure signature in conjunction with fall time as indicator in oil and gas wells | — | 2011-06-21 |
| 7878251 | Multiple stage tool for use with plunger lift | Paul T. Roberts | 2011-02-01 |
| 7690425 | Data logger plunger and method for its use | — | 2010-04-06 |
| 7597143 | Method and apparatus for logging downhole data | — | 2009-10-06 |
| 7328748 | Thermal actuated plunger | — | 2008-02-12 |
| 7314080 | Slidable sleeve plunger | — | 2008-01-01 |