Robert L. Jessup
5Patents
5h-index
5Co-inventors
52Inventor score
Filing activity: Jan 13, 1975 → May 8, 1986
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3970147A | Method and apparatus for annulus pressure responsive circulation and tester valve manipulation | Fixed Constructions | 59 | Expired |
| US4063593A | Full-opening annulus pressure operated sampler valve with reverse circulation valve | Fixed Constructions | 56 | Expired |
| US4246968A | Cementing tool with protective sleeve | Fixed Constructions | 45 | Expired |
| US4718495A | Surface packer and method for using the same | Fixed Constructions | 25 | Expired |
| US4044829A | Method and apparatus for annulus pressure responsive circulation and tester valve manipulation | Fixed Constructions | 21 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.