Burchus Q. Barrington
39Patents
23h-index
12Co-inventors
78Inventor score
Filing activity: Oct 24, 1974 → Mar 3, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4064937A | Annulus pressure operated closure valve with reverse circulation valve | Fixed Constructions | 77 | Expired |
| US5138313A | Electrically insulative gap sub assembly for tubular goods | Fixed Constructions | 77 | Expired |
| US4375239A | Acoustic subsea test tree and method | Fixed Constructions | 64 | Expired |
| US4347900A | Hydraulic connector apparatus and method | Emerging Cross-Sectional Technologies | 58 | Expired |
| US5133419A | Hydraulic shock absorber with nitrogen stabilizer | Mechanical Engineering; Lighting; Heating | 53 | Expired |
| US4646829A | Hydraulically set and released bridge plug | Fixed Constructions | 43 | Expired |
| US4448254A | Tester valve with silicone liquid spring | Fixed Constructions | 42 | Expired |
| US3964544A | Pressure operated isolation valve for use in a well testing and treating apparatus, and its method of operation | Fixed Constructions | 42 | Expired |
| US4116272A | Subsea test tree for oil wells | Fixed Constructions | 37 | Expired |
| US4801160A | High-pressure fluid flow connector | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US5209303A | Compressible liquid mechanism for downhole tool | Fixed Constructions | 36 | Expired |
| US4673890A | Well bore measurement tool | Fixed Constructions | 36 | Expired |
| US4378850A | Hydraulic fluid supply apparatus and method for a downhole tool | Fixed Constructions | 35 | Expired |
| US4047564A | Weight and pressure operated well testing apparatus and its method of operation | Fixed Constructions | 31 | Expired |
| US4374583A | Sleeve valve | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US4928520A | Plug release indicator | Fixed Constructions | 30 | Expired |
| US4444268A | Tester valve with silicone liquid spring | Fixed Constructions | 29 | Expired |
| US4109724A | Oil well testing valve with liquid spring | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4270610A | Annulus pressure operated closure valve with improved power mandrel | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4076077A | Weight and pressure operated well testing apparatus and its method of operation | Fixed Constructions | 28 | Expired |
| US3969937A | Method and apparatus for testing wells | Fixed Constructions | 27 | Expired |
| US5083623A | Hydraulic shock absorber | Fixed Constructions | 26 | Expired |
| US4083409A | Full flow bypass valve | Fixed Constructions | 25 | Expired |
| US4319634A | Drill pipe tester valve | Fixed Constructions | 21 | Expired |
| US5297629A | Drill stem testing with tubing conveyed perforation | Fixed Constructions | 21 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.