Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11142439 | Snubbing jack capable of reacting torque loads | Timothy S. Steffenhagen, Kraig W. Huse | 2021-10-12 |
| 10352805 | Load-measuring hydraulic cylinder | Timothy S. Steffenhagen | 2019-07-16 |
| 10024123 | Coiled tubing injector with hydraulic traction slip mitigation circuit and method of use | Timothy S. Steffenhagen | 2018-07-17 |
| 9581009 | Coiled tubing injector with load sensing tubing guide | Timothy S. Steffenhagen, David W. McCulloch | 2017-02-28 |
| 9458682 | Coiled tubing injector with limited slip chains | David W. McCulloch, Timothy S. Steffenhagen, William G. Stewart | 2016-10-04 |
| 9236781 | Planetary gear assembly | — | 2016-01-12 |
| 9151122 | Coiled tubing injector with limited slip chains | David W. McCulloch, Timothy S. Steffenhagen, William G. Stewart | 2015-10-06 |
| 8584400 | Absorbent products, irrigation, erosion control, and root growth control | Jeno Muthiah, Gerald K. White, Duane R. Rubash | 2013-11-19 |
| 8544536 | Coiled tubing injector with limited slip chains | David W. McCulloch, Timothy S. Steffenhagen, William G. Stewart | 2013-10-01 |
| D564364 | Fluid dispensing bottle | Michelino Paolino, Jr., David Kunitz | 2008-03-18 |
| 7049932 | Control system | James E. French, Michael Brading, Rizwan Ahmad, Richard Anthony Connell | 2006-05-23 |
| 4461750 | Infrared window materials and their fabrication | Daniel L. Chess | 1984-07-24 |