DL

Dwayne Leismer

CI Camco International: 14 patents #3 of 166Top 2%
AL Accessesp Uk Limited: 11 patents #1 of 12Top 9%
Schlumberger Technology: 7 patents #897 of 7,293Top 15%
📍 Houston, TX: #467 of 21,073 inventorsTop 3%
🗺 Texas: #3,516 of 125,132 inventorsTop 3%
Overall (All Time): #110,365 of 4,157,543Top 3%
32
Patents All Time

Issued Patents All Time

Showing 1–25 of 32 patents

Patent #TitleCo-InventorsDate
12345101 System and method for well bore isolation of a retrievable motor assembly Rogelio Cantu 2025-07-01
12276163 Method and apparatus for testing of the downhole connector electrical system during installation Andras Bencze, Rogelio Cantu 2025-04-15
11821266 Method for testing of the downhole connector electrical system during installation Andras Bencze, Rogelio Cantu 2023-11-21
11572743 Method and apparatus for testing of the downhole connector electrical system during installation Andras Bencze, Rogelio Cantu 2023-02-07
11525311 System and method for well bore isolation of a retrievable motor assembly Rogelio Cantu 2022-12-13
11293273 Method and apparatus for downhole heating David Malone, John Patterson, Rogelio Cantu 2022-04-05
11118404 System and method for reverse Y-tool bypass Rogelio Cantu 2021-09-14
11105160 Low profile, pressure balanced, oil expansion compensated downhole electrical connector system Andras Bencze, Rogelio Cantu, Matthew Benham 2021-08-31
10934789 System and method for terminating cable Matthew Benham, Jansen Lloyd 2021-03-02
10530143 Stress control cones for downhole electrical power system tubing encapsulated power cables David Malone, Rogelio Cantu, Stephen Janert 2020-01-07
9988894 System and method for installing a power line in a well David Malone 2018-06-05
7543652 Subsurface annular safety barrier Peter Krawiec, Youel Hilsman 2009-06-09
7140447 Subsurface annular safety barrier Peter Krawiec, Youel Hilsman 2006-11-28
6789627 Control line cutting tool and method 2004-09-14
6732801 Apparatus and method for completing a junction of plural wellbores Herve Ohmer 2004-05-11
6712149 Apparatus and method for spacing out of offshore wells Rodney J. Wetzel 2004-03-30
6491102 Downhole multiplexer and related methods Thomas G. Hill, Jr., Arthur J. Morris 2002-12-10
6433991 Controlling activation of devices Thomas M. Deaton, Dennis M. Read, Jr. 2002-08-13
6308783 Wellbore flow control device Ronald E. Pringle, Clay W. Milligan, Jr. 2001-10-30
6296061 Pilot-operated pressure-equalizing mechanism for subsurface valve 2001-10-02
6247536 Downhole multiplexer and related methods Thomas G. Hill, Jr., Arthur J. Morris 2001-06-19
6241015 Apparatus for remote control of wellbore fluid flow Ronald E. Pringle, Clay W. Milligan, Jr. 2001-06-05
6237683 Wellbore flow control device Ronald E. Pringle, Clay W. Milligan, Jr. 2001-05-29
6209649 Selective re-entry tool for multiple tubing completions and method of using Ronald E. Pringle, Clay W. Milligan, Jr. 2001-04-03
5984006 Emergency release tool Dennis M. Read, Jr. 1999-11-16