Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10690124 | Axial piston hydraulic pump | — | 2020-06-23 |
| 10221663 | Wireline-deployed positive displacement pump for wells | Michael C. Romer, Randy C. Tolman, François Porel | 2019-03-05 |
| 10017228 | Hydraulic device for controlling the depth of an immersible object | — | 2018-07-10 |
| 9127535 | Rigless low volume pump system | Robert A. Coyle, William Michel, Alistair Gill, Paul Ellerton, David Fielding | 2015-09-08 |
| 8925637 | Rigless low volume pump system | Robert A. Coyle, William Michel, Alistair Gill, Paul Ellerton, David Fielding | 2015-01-06 |
| 8834133 | Pumping device for fluids located at the bottom of a drilled well | — | 2014-09-16 |
| 8511390 | Rigless low volume pump system | Robert A. Coyle, William Michel, Alistair Gill, Paul Ellerton, David Fielding | 2013-08-20 |
| 7779745 | Automatic-locking hydraulic jack | — | 2010-08-24 |
| 7178449 | Hydraulic device driving a rotating receiver | — | 2007-02-20 |
| 6264437 | High pressure pump for all liquids | — | 2001-07-24 |
| 5554008 | High-pressure pump to feed internal-combustion engine fuel-injections | — | 1996-09-10 |
| 5477680 | Motor driven hydraulic tool with variable displacement hydraulic pump | George T. Heskey, William Michel | 1995-12-26 |
| 5395125 | Rotating joint for hydraulic system | — | 1995-03-07 |
| 5354181 | Hydraulic piston pumps equipped with suction valve | — | 1994-10-11 |
| 5067753 | Hydrostatically balanced rotary hydraulic connector | — | 1991-11-26 |
| 5032061 | Hydraulic pumps | — | 1991-07-16 |
| 5018753 | Compositions for hydraulic joint | — | 1991-05-28 |
| 4964345 | Rail car axle with axial hydraulic pump | — | 1990-10-23 |
| 4629400 | Hydraulic pump with pistons and controlled suction valves | — | 1986-12-16 |
| 4603711 | Prestressed hydraulic accumulator | — | 1986-08-05 |
| 4597483 | Hydrostatic clutch | Ivan J. Cyphelly | 1986-07-01 |
| 4492013 | Method for manufacturing a prestressed hydraulic accumulator | — | 1985-01-08 |
| 4486152 | Pump with spring loaded valve | — | 1984-12-04 |
| 4449552 | Prestressed assembled oleo-pneumatic accumulators | — | 1984-05-22 |