Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11898404 | Drill string components having multiple-thread joints | Christopher L. Drenth | 2024-02-13 |
| 10934786 | Drill string components resistant to jamming | Christopher L. Drenth | 2021-03-02 |
| 10570676 | Drill string components having multiple-thread joints | Christopher L. Drenth | 2020-02-25 |
| 10364618 | Drill string components resistant to jamming | Christopher L. Drenth | 2019-07-30 |
| 9850723 | Drill string components having multiple-thread joints | Christopher L. Drenth | 2017-12-26 |
| 9810029 | Drill string components resistant to jamming | Christopher L. Drenth | 2017-11-07 |
| 8955620 | Drill rod guide | Andrew Frank Hay, Mathew C. Everett | 2015-02-17 |
| 8186925 | Drill rod handler | — | 2012-05-29 |
| 8186926 | Drill rod handler | — | 2012-05-29 |
| 7849929 | Drill rod spinner device | — | 2010-12-14 |
| 7743850 | Apparatus and method for reducing required torque | — | 2010-06-29 |
| 7322430 | Apparatus and method for reducing required torque | — | 2008-01-29 |