Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7909117 | Downhole adjustable bent-angle mechanism for use with a motor for directional drilling | Donald H. Van Steenwyk, Dennis J. Buckley, James R. Higginbotham, Mark Chustz, Michael A. Yoshimune | 2011-03-22 |
| 7287605 | Steerable drilling apparatus having a differential displacement side-force exerting mechanism | Donald H. Van Steenwyk | 2007-10-30 |
| 7225888 | Hydraulic fluid coupling | Donald H. Van Steenwyk, James R. Higginbotham | 2007-06-05 |
| 5590714 | Multi-mode cushioning an instrument suspended in a well | Donald H. Van Steenwyk, Robert M. Baker | 1997-01-07 |
| 5520246 | Multi-mode cushioning an instrument suspended in a well | Donald H. Van Steenwyk, Robert M. Baker | 1996-05-28 |
| 5507348 | Apparatus for locking wire line instrument to drill collar | Donald H. Van Steenwyk, Robert M. Baker | 1996-04-16 |
| 5389003 | Wireline wet connection | Donald H. Van Steenwyk, Michael S. Orcutt-Clenard | 1995-02-14 |
| 5366018 | Miniature rope socket assembly for combined mechanical and electrical connection in a borehole wireline | Donald H. Van Steenwyk | 1994-11-22 |
| 4181014 | Remote well signalling apparatus and methods | Bernard R. Zuvela, Richard A. Johnson | 1980-01-01 |