Issued Patents All Time
Showing 76–95 of 95 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7422070 | Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel | L. Murray Dallas | 2008-09-09 |
| 7395867 | Hybrid wellhead system and method of use | L. Murray Dallas | 2008-07-08 |
| 7392864 | Slip spool assembly and method of using same | L. Murray Dallas, Irwin Rosenhauch | 2008-07-01 |
| 7350562 | Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use | L. Murray Dallas | 2008-04-01 |
| 7296631 | System and method for low-pressure well completion | L. Murray Dallas | 2007-11-20 |
| 7278477 | Cup tool, cup tool cup and method of using the cup tool | L. Murray Dallas | 2007-10-09 |
| 7278490 | Blast joint swivel for wellhead isolation tool and method of using same | L. Murray Dallas | 2007-10-09 |
| 7267180 | Multi-lock adapters for independent screwed wellheads and methods of using same | L. Murray Dallas | 2007-09-11 |
| 7243733 | Cup tool for a high-pressure mandrel and method of using same | Danny Lee Artherholt | 2007-07-17 |
| 7237615 | Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel | L. Murray Dallas | 2007-07-03 |
| 7213641 | Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same | L. Murray Dallas | 2007-05-08 |
| 7207384 | Wellhead and control stack pressure test plug tool | L. Murray Dallas | 2007-04-24 |
| 7204474 | High-pressure plug valve | L. Murray Dallas | 2007-04-17 |
| 7168495 | Casing-engaging well tree isolation tool and method of use | L. Murray Dallas | 2007-01-30 |
| 7159663 | Hybrid wellhead system and method of use | L. Murray Dallas | 2007-01-09 |
| 7159652 | Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use | L. Murray Dallas | 2007-01-09 |
| 7069987 | Casing adapter tool for well servicing | Nathan Kwasniewski, Keith David Farquharson, John Henry Whelan | 2006-07-04 |
| 7066269 | Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel | L. Murray Dallas | 2006-06-27 |
| 7040410 | Adapters for double-locking casing mandrel and method of using same | L. Murray Dallas | 2006-05-09 |
| 7032677 | Multi-lock adapters for independent screwed wellheads and methods of using same | L. Murray Dallas | 2006-04-25 |