Issued Patents All Time
Showing 25 most recent of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9540888 | Wear bushing for locking to a wellhead | — | 2017-01-10 |
| 9366105 | Casing hanger lockdown sleeve | Morris B. Wade | 2016-06-14 |
| 9347291 | Wellhead seal assembly lockdown system | Daniel A. Marroquin, Flavio Nisenbaum | 2016-05-24 |
| 9151134 | Seal assembly and method | Andrew J. Grohmann, Bruce J. Witwer | 2015-10-06 |
| 8534368 | Downhole tool with slip releasing mechanism | John M. Yokley | 2013-09-17 |
| 8181701 | Downhole tool with hydraulic closure seat | John M. Yokley | 2012-05-22 |
| 7686090 | Liner hanger tool with re-latchable cementing bushing | John M. Yokley | 2010-03-30 |
| 7581596 | Downhole tool with C-ring closure seat and method | James M. Walker | 2009-09-01 |
| 7503391 | Tieback connector | Jason McCanna | 2009-03-17 |
| 7467663 | High pressure wellhead assembly interface | — | 2008-12-23 |
| 7395866 | Method and apparatus for blow-out prevention in subsea drilling/completion systems | Lionel J. Milberger, Morris B. Wade | 2008-07-08 |
| 7331396 | Subsea production systems | Lionel J. Milberger | 2008-02-19 |
| 7219738 | Inner riser adjustable hanger and seal assembly | — | 2007-05-22 |
| 7096956 | Wellhead assembly with pressure actuated seal assembly and running tool | — | 2006-08-29 |
| 6907932 | Control pod latchdown mechanism | — | 2005-06-21 |
| 6761221 | Slip assembly for hanging an elongate member within a wellbore | John N. Yokley | 2004-07-13 |
| 6739398 | Liner hanger running tool and method | John M. Yokley | 2004-05-25 |
| 6729392 | Tubing hanger with ball valve in the annulus bore | Blake T. DeBerry | 2004-05-04 |
| 6712152 | Downhole plug holder and method | John M. Yokley | 2004-03-30 |
| 6705615 | Sealing system and method | Lionel J. Milberger | 2004-03-16 |
| 6698712 | Ball valve assembly | Lionel J. Milberger, Jason McCanna, Xhemal Kaculi | 2004-03-02 |
| 6681860 | Downhole tool with port isolation | John M. Yokley | 2004-01-27 |
| 6666276 | Downhole radial set packer element | John M. Yokley | 2003-12-23 |
| 6655456 | Liner hanger system | John M. Yokley | 2003-12-02 |
| 6202745 | Wellhead apparatus | Charles E. Robinson | 2001-03-20 |