LD

L. Murray Dallas

SP Stinger Wellhead Protection: 49 patents #2 of 6Top 35%
OL Oil States Energy Services, L.L.C.: 4 patents #6 of 23Top 30%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Calgary, CA: #5 of 5,407 inventorsTop 1%
Overall (All Time): #20,241 of 4,157,543Top 1%
85
Patents All Time

Issued Patents All Time

Showing 26–50 of 85 patents

Patent #TitleCo-InventorsDate
7584798 Subsurface lubricator and method of use 2009-09-08
7578351 Configurable wellhead system with permanent fracturing spool and method of use 2009-08-25
7520334 Subsurface lubricator and method of use 2009-04-21
7516786 Wellhead and control stack pressure test plug tool Bob McGuire 2009-04-14
7506660 Gate valve with replaceable inserts and method of refurbishing same Bob McGuire 2009-03-24
7484776 High-pressure threaded union with metal-to-metal seal, and metal ring gasket for same Bob McGuire, Danny Lee Artherholt 2009-02-03
7481239 Gate valve with replaceable inserts Bob McGuire 2009-01-27
7481269 Hybrid wellhead system and method of use Bob McGuire 2009-01-27
7475721 Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use Bob McGuire 2009-01-13
7438126 Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well 2008-10-21
7428931 Multi-lock adapters for independent screwed wellheads and methods of using same Bob McGuire 2008-09-30
7422070 Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel Bob McGuire 2008-09-09
7395867 Hybrid wellhead system and method of use Bob McGuire 2008-07-08
7392864 Slip spool assembly and method of using same Bob McGuire, Irwin Rosenhauch 2008-07-01
7350562 Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use Bob McGuire 2008-04-01
7296631 System and method for low-pressure well completion Bob McGuire 2007-11-20
7278477 Cup tool, cup tool cup and method of using the cup tool Bob McGuire 2007-10-09
7278490 Blast joint swivel for wellhead isolation tool and method of using same Bob McGuire 2007-10-09
7267180 Multi-lock adapters for independent screwed wellheads and methods of using same Bob McGuire 2007-09-11
7237615 Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel Bob McGuire 2007-07-03
7213641 Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same Bob McGuire 2007-05-08
7210525 Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well 2007-05-01
7207384 Wellhead and control stack pressure test plug tool Bob McGuire 2007-04-24
7204474 High-pressure plug valve Bob McGuire 2007-04-17
7168495 Casing-engaging well tree isolation tool and method of use Bob McGuire 2007-01-30