Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11098708 | Hydraulic pumping system with piston displacement sensing and control | Clark E. Robison, Robert G. McDonald, James S. Trapani, Benson Thomas | 2021-08-24 |
| 10760388 | Slant mounted hydraulic pumping system | James S. Trapani | 2020-09-01 |
| 10619464 | Hydraulic pumping system with detection of fluid in gas volume | Jeffrey J. Lembcke, Clark E. Robison | 2020-04-14 |
| 10240098 | Modular processes for the production of tight gas and tight oil and for tight oil refining | Sarabjit S. Randhava, Richard L. Kao, Edward H. Stribling, III | 2019-03-26 |
| 9903187 | Hydraulic pumping system with enhanced piston rod sealing | Clark E. Robison | 2018-02-27 |
| 7005209 | Fuel cell stack assembly | Michael G. Gaines, George R. King | 2006-02-28 |
| 7001687 | Unitized MEA assemblies and methods for making same | Michael G. Gaines, George R. King | 2006-02-21 |
| 5494109 | Backflush filter system for downhole pumps | — | 1996-02-27 |
| 5413721 | Backflush filter system for downhole pumps | — | 1995-05-09 |
| 5207273 | Method and apparatus for pumping wells | Gordon O. Cates, Ronald Marshall Bass | 1993-05-04 |
| 4969518 | Reciprocating rod type downhole pump | Guy Wilson | 1990-11-13 |
| 4861074 | Tubing collar | Bernard J. Eastlund, Douglas C. Anderson | 1989-08-29 |
| 4716960 | Method and system for introducing electric current into a well | Bernard J. Eastlund, Ronald Marshall Bass, John M. Harrison | 1988-01-05 |
| 4678034 | Well heater | Bernard J. Eastlund, Ronald Marshall Bass | 1987-07-07 |