Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9845651 | Retrievable downhole tool system | Mark McCoy, Benny Layton, Michael J. Harris | 2017-12-19 |
| 8424381 | Fluid level measuring device | David A. Lamphere | 2013-04-23 |
| 8074718 | Ball seat sub | — | 2011-12-13 |
| 8047280 | Drillable bridge plug | Lap Tran, Piro Shkurti, George J. Melenyzer | 2011-11-01 |
| 7980300 | Drillable bridge plug | James A. Simson, George J. Melenyzer | 2011-07-19 |
| 7810558 | Drillable bridge plug | Piro Shkurti, Lap Tran, George J. Melenyzer | 2010-10-12 |
| 7665516 | Permanent anchoring device | Lap Tran | 2010-02-23 |
| 7455118 | Secondary lock for a downhole tool | George J. Melenyzer | 2008-11-25 |
| 7424909 | Drillable bridge plug | James A. Simson, George J. Melenyzer | 2008-09-16 |
| 7325631 | Mill and pump-off sub | Tracy Speer | 2008-02-05 |
| 7216700 | Torsional resistant slip mechanism and method | — | 2007-05-15 |
| 6580732 | Multiple mode laser | Steve Guch, Jr., Charles L. Stonecypher, Ronald R. Selleck | 2003-06-17 |
| 6564871 | High pressure permanent packer | — | 2003-05-20 |
| 6305474 | Scoop for use with an anchor system for supporting a whipstock | J. Brandon Guillory | 2001-10-23 |
| 6164377 | Downhole packer system | — | 2000-12-26 |
| 4771881 | Materials handling system | — | 1988-09-20 |
| 4565247 | Wireline set tubing retrievable seal bore packer apparatus | William T. Tapp | 1986-01-21 |
| 4430887 | Pipe tester with multiple fluid source connections | Fred L. Herman | 1984-02-14 |
| 4325409 | Pilot valve for subsea test valve system for deep water | — | 1982-04-20 |
| 4325434 | Tubing shut off valve | — | 1982-04-20 |
| 4270606 | Apparatus for selective disengagement of a fluid transmission conduit and for control of fluid transmission from a well zone | David M. McStravick | 1981-06-02 |
| 4234043 | Removable subsea test valve system for deep water | — | 1980-11-18 |
| 4230061 | Liquid cargo container | Jean Kohn | 1980-10-28 |
| 4210207 | Valve apparatus | David M. McStravick | 1980-07-01 |