Marvin L. Holbert
8Patents
7h-index
6Co-inventors
56Inventor score
Filing activity: Jan 26, 1976 → Dec 23, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6209632A | Subsurface signal transmitting apparatus | Fixed Constructions | 40 | Expired |
| US6405795B2 | Subsurface signal transmitting apparatus | Fixed Constructions | 32 | Expired |
| US4212562A | Method and apparatus for leveling templates for offshore subterranean wells | Fixed Constructions | 17 | Expired |
| US6065544A | Method and apparatus for multiple packer pressure relief | Fixed Constructions | 17 | Expired |
| US4880257A | Pressure compensation multi tubular safety joint | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4050731A | Shifting apparatus | Fixed Constructions | 10 | Expired |
| US6672383B2 | Subsurface signal transmitting apparatus | Fixed Constructions | 8 | Expired |
| US7093680B2 | Subsurface signal transmitting apparatus | Fixed Constructions | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.