Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10246950 | Deadline compensator | — | 2019-04-02 |
| 9932802 | Downhole slot cutter | — | 2018-04-03 |
| 9605501 | System for releasing a cement plug | — | 2017-03-28 |
| 9528330 | System and method for transporting tubular onto a drilling rig | — | 2016-12-27 |
| 9506306 | Casing filling tool | — | 2016-11-29 |
| 9507319 | Flow control diverter valve | — | 2016-11-29 |
| 9464491 | Systems and methods for tubular engagement and manipulation | — | 2016-10-11 |
| 9273540 | Downhole slot cutter | — | 2016-03-01 |
| 9175532 | Downhole tool hydraulic retriever | Daniel Howard Milmine | 2015-11-03 |
| 9127514 | Bladder type crimper | — | 2015-09-08 |
| 9045944 | Pull-down method and equipment for installing well casing | Dietmar J. Neidhardt | 2015-06-02 |
| 8985225 | Tubular engaging device and method | — | 2015-03-24 |
| 8985227 | Dampered drop plug | — | 2015-03-24 |
| 8733474 | Flow control diverter valve | — | 2014-05-27 |
| 8701785 | Shrinkable sleeve stabilizer | — | 2014-04-22 |
| 8439121 | Hydraulic interlock system between casing gripper and spider | Dave Andrews | 2013-05-14 |
| 7793729 | Gate valve and method of controlling pressure during casing-while-drilling operations | — | 2010-09-14 |
| 7770654 | Pipe handling device, method and system | K. Evert Beierbach | 2010-08-10 |
| 7377324 | Pipe handling device, method and system | K. Evert Beierbach | 2008-05-27 |
| 7140443 | Pipe handling device, method and system | K. Evert Beierbach | 2006-11-28 |
| 6311792 | Casing clamp | Stephen F. Scott | 2001-11-06 |