Martin E. True
7Patents
7h-index
4Co-inventors
48Inventor score
Filing activity: Apr 16, 1975 → Oct 6, 1983
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4683962A | Spinner for use in connecting pipe joints | Fixed Constructions | 86 | Expired |
| US4042033A | Combination subsurface safety valve and chemical injector valve | Fixed Constructions | 49 | Expired |
| US4433448A | Power pipe thread cleaner | Performing Operations; Transporting | 23 | Expired |
| US3973586A | Velocity-tubing pressure actuated subsurface safety valve | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4125040A | Power tong apparatus | Fixed Constructions | 18 | Expired |
| US4442736A | Power pipe tong rotary plunger inserter | Fixed Constructions | 9 | Expired |
| US4630688A | Power spinner for rotating a kelly joint | Emerging Cross-Sectional Technologies | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.