DH

Douglas A. Hunter

CT Canrig Drilling Technology: 11 patents #4 of 58Top 7%
P( Prostar Energy Technologies (Usa): 5 patents #3 of 7Top 45%
NU Nabors Drilling Technologies Usa: 1 patents #77 of 147Top 55%
Overall (All Time): #201,229 of 4,157,543Top 5%
21
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12269069 Mat washing system Sam West, Ryan Dusterhoft, Heith Johnson, Dennis Needham, Gerald Mychajlyszyn +2 more 2025-04-08
11402053 Vehicle support structure for a worksite Daniel John Clarke, Daniel Harvard Kusler 2022-08-02
11230886 Automated drilling/service rig apparatus Mark Charles Taggart, Daniel Harvard Kusler, Colin Knapp 2022-01-25
10988994 Pipe handler and pipe loader for a well rig Jason Peter Clarke, Daniel Harvard Kusler, Mark Charles Taggart 2021-04-27
10738545 Pipe handler and pipe loader for a well rig Jason Peter Clarke, Daniel Harvard Kusler, Mark Charles Taggart 2020-08-11
10711523 Automated drilling/service rig apparatus Mark Charles Taggart, Daniel Harvard Kusler, Colin Knapp 2020-07-14
10329857 Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings 2019-06-25
9797196 Automated drilling/service rig apparatus Mark Charles Taggart, Daniel Harvard Kusler, Colin Knapp 2017-10-24
9404324 Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings 2016-08-02
9097070 Apparatus for automated oilfield torque wrench set-up to make-up and break-out tubular strings 2015-08-04
8490520 Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings 2013-07-23
8454296 Pipe-handling apparatus and methods Andrew Gerber 2013-06-04
8215887 Pipe-handling apparatus and methods Larry M. Fikowski, Friedhold Brost 2012-07-10
8074537 Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings 2011-12-13
8042432 Oilfield tubular torque wrench Martin Thieme, Friedhold Brost 2011-10-25
8033779 Pipe handling apparatus and methods Andrew Gerber 2011-10-11
8016536 Pipe-handling apparatus and methods Andrew Gerber 2011-09-13
7958787 Oilfield tubular torque wrench 2011-06-14
7832974 Pipe-handling apparatus Larry M. Fikowski, Friedhold Brost 2010-11-16
6526731 Forage compacting apparatus with moisture sensor Richard Littlewood 2003-03-04
6085486 Forage compactor Richard Littlewood 2000-07-11