DH

David C. Hoyle

Schlumberger Technology: 21 patents #213 of 7,293Top 3%
CI Cameron International: 5 patents #84 of 660Top 15%
Overall (All Time): #136,644 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 25 most recent of 28 patents

Patent #TitleCo-InventorsDate
12152680 Needle tip and seat for a choke valve Scott Allan Miller, III, Ghulam A. Barkatally, Jerry A. Martino, Declan Elliott, Edmund Peter McHugh +2 more 2024-11-26
12116844 Tiling for downhole tool Scott Dahlgren, David R. Hall, Malcolm R. Taylor 2024-10-15
12092226 Choke valve assembly Declan Elliott, Scott Dahlgren, Edmund Peter McHugh, Abinesh Gnanavelu, Jerry A. Martino 2024-09-17
11796068 Needle tip and seat for a choke valve Scott Allan Miller, III, Ghulam A. Barkatally, Jerry A. Martino, Declan Elliott, Edmund Peter McHugh +2 more 2023-10-24
11788359 Downhole steering system and methods Jonathan Marshall, Edward George Parkin, Geoffrey C. Downton, Nalin Weerasinghe, Dennis Patrick Chesnutt 2023-10-17
11767723 Downhole transducer assemblies and pressure range control therein Edward George Parkin, Scott Richard Woolston, Jonathan Marshall, Jim Shumway 2023-09-26
11608719 Controlling fluid flow through a valve David R. Hall, Jonathan Marshall, Malcolm R. Taylor, Jordan D. Englund 2023-03-21
11549593 Needle tip and seat for a choke valve Scott Allan Miller, III, Ghulam A. Barkatally, Jerry A. Martino, Declan Elliott, Edmund Peter McHugh +2 more 2023-01-10
11542805 Marking and sensing a borehole wall Jonathan Marshall, Scott Richard Woolston 2023-01-03
11255143 Pressure range control in a downhole transducer assembly Jonathan Marshall, Edward George Parkin, Scott Richard Woolston, Jim Shumway 2022-02-22
11125049 Superhard material enhanced choke cage Neil Cannon, David S. Clark 2021-09-21
11118408 Downhole steering system and methods Jonathan Marshall, Edward George Parkin, Geoffrey C. Downton, Nalin Weerasinghe, Dennis Patrick Chestnutt 2021-09-14
11028685 Downhole rate of penetration measurement Malcolm R. Taylor, Scott Richard Woolston, Jonathan Marshall 2021-06-08
10927647 Systems and methods for directing fluid flow David R. Hall, Jonathan Marshall, Malcolm R. Taylor, Jordan D. Englund 2021-02-23
10883506 Unitary thick diamond composite downhole tool components David Milton Eslinger, Spyridon Joseph Kotsonis, Alejandro Camacho Cardenas, Arthur H. Watson 2021-01-05
10830359 Needle tip and seat for a choke valve Scott Allan Miller, III, Ghulam A. Barkatally, Jerry A. Martino, Declan Elliott, Edmund Peter McHugh +2 more 2020-11-10
7336562 Sonic logging tool including receiver and spacer structure Hitoshi Tashiro, Akira Otsuka, Jahir Pabon, Hitoshi Sugiyama 2008-02-26
6739423 Acoustic logging tool Hitoshi Tashiro, Jahir Pabon, Frank J. Morris, Hitoshi Sugiyama, David Leslie +1 more 2004-05-25
6494288 Acoustic logging tool Hitoshi Tashiro, Jahir Pabon, Frank J. Morris, Hitoshi Sugiyama, David Leslie +1 more 2002-12-17
6474439 Dipole logging tool Hitoshi Tashiro, Benoit Froelich, Alain Brie, Hiroshi Hori, Hitoshi Sugiyama +2 more 2002-11-05
5596142 Well logging apparatus comprising a measuring pad and a combinaton device including such apparatus Alain G. M. Delpuech, Alan J. Sallwasser, Bronislaw Seeman 1997-01-21
5528556 Combination well logging device Bronislaw Seeman, Alain G. M. Delpuech 1996-06-18
5043952 Monopole transmitter for a sonic well tool Albert H. Wignall, Jeffrey B. Aron, Anthony K. Booer 1991-08-27
5036945 Sonic well tool transmitter receiver array including an attenuation and delay apparatus Albert H. Wignall, Jeffrey B. Aron 1991-08-06
4872526 Sonic well logging tool longitudinal wave attenuator Albert H. Wignall 1989-10-10