Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9249644 | Internal bidirectional tubing plug | — | 2016-02-02 |
| 8985224 | Internal bidirectional tubing plug | — | 2015-03-24 |
| 8459344 | Bi-directional internal tubing plug | — | 2013-06-11 |
| 7740151 | Pumping dispenser for viscous liquids | — | 2010-06-22 |
| 5341879 | Fine filtration system | — | 1994-08-30 |
| 4212562 | Method and apparatus for leveling templates for offshore subterranean wells | Marvin L. Holbert | 1980-07-15 |