Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10018004 | Method and apparatus for casing entry | William R. Abrant, Gerald Heisig | 2018-07-10 |
| 8695699 | Downhole release joint with radially expandable member | Richard Murray Whiddon, Frederick Cornell Bennett, Harsh V. Chowdhary | 2014-04-15 |
| 8499840 | Downhole release joint with radially expandable member | Frederick Cornell Bennett, Harsh V. Chowdhary, Richard Murray Whiddon | 2013-08-06 |
| 7886831 | Apparatus for radially expanding and plastically deforming a tubular member | David Paul Brisco | 2011-02-15 |
| 7823659 | Apparatus and methods for drilling and lining a wellbore | Darrell Scott Costa, Kevin Waddell, Edwin Zwald, Mark Holland, Akindele Olufowoshe +2 more | 2010-11-02 |
| 7080687 | Anti-rotation method and apparatus for limiting rotation of cementing plugs | Henry E. Rogers, Seth Richard MOORE, Donald Garrett, Ronald Holubec | 2006-07-25 |
| 6799638 | Method, apparatus and system for selective release of cementing plugs | — | 2004-10-05 |
| 6796377 | Anti-rotation apparatus for limiting rotation of cementing plugs | Henry E. Rogers, Earl Webb, Michael D. Stevens | 2004-09-28 |
| 6571880 | Method and multi-purpose apparatus for control of fluid in wellbore casing | Robert Bates, David F. Laurel, Samuel P. Hawkins, III, Burney J. Latiolais, Jr., Keith T. Lutgring | 2003-06-03 |
| 6318472 | Hydraulic set liner hanger setting mechanism and method | Henry E. Rogers, David D. Szarka | 2001-11-20 |
| 6011346 | Apparatus and method for generating electricity from energy in a flowing stream of fluid | Ronnie J. Buchanan | 2000-01-04 |
| 5967231 | Plug release indication method | David F. Laurel, Stephen E. Tilghman | 1999-10-19 |