Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11555386 | Plunger lift | William Charles Harris | 2023-01-17 |
| 11180977 | Plunger lift method | William Charles Harris | 2021-11-23 |
| 10641072 | Plunger lift method and apparatus | William Charles Harris | 2020-05-05 |
| 10161231 | Plunger lift with internal movable element | William Charles Harris | 2018-12-25 |
| 7448442 | Pad type plunger | — | 2008-11-11 |
| 6719060 | Plunger lift separation and cycling | — | 2004-04-13 |
| 6467541 | Plunger lift method and apparatus | — | 2002-10-22 |
| 6209637 | Plunger lift with multipart piston and method of using the same | — | 2001-04-03 |
| 5915475 | Down hole well pumping apparatus and method | Paul Stephen Barter | 1999-06-29 |