Paul T. Roberts
9Patents
2h-index
11Co-inventors
48Inventor score
Filing activity: Dec 3, 1981 → Sep 23, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US11661827B2 | Gas lift valve aging process and apparatus | Fixed Constructions | 3 | Active |
| US7878251B2 | Multiple stage tool for use with plunger lift | Fixed Constructions | 2 | Active |
| US4398924A | Sulfur oxide reduction in a coal gasification process | Chemistry; Metallurgy | 1 | Expired |
| US9181768B2 | Method and apparatus for detecting plunger arrival | Physics | 1 | Active |
| US11629710B2 | Torpedo plunger | Fixed Constructions | 0 | Active |
| US10895128B2 | Taper lock bypass plunger | Fixed Constructions | 0 | Active |
| US10689957B2 | Method and apparatus for detecting plunger arrival | Physics | 0 | Active |
| US11542796B2 | Magnetic catch for plunger lift | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9850746B2 | Method and apparatus for detecting plunger arrival | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.