Martin Evans
9Patents
9h-index
11Co-inventors
66Inventor score
Filing activity: Oct 18, 1982 → May 15, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6600321B2 | Apparatus and method for wellbore resistivity determination and imaging using capacitive coupling | Physics | 78 | Expired |
| US5502686A | Method and apparatus for imaging a borehole sidewall | Physics | 77 | Expired |
| US6850068B2 | Formation resistivity measurement sensor contained onboard a drill bit (resistivity in bit) | Emerging Cross-Sectional Technologies | 74 | Expired |
| US6714014B2 | Apparatus and method for wellbore resistivity imaging using capacitive coupling | Physics | 59 | Expired |
| US7250768B2 | Apparatus and method for resistivity measurements during rotational drilling | Physics | 38 | Expired |
| US6348796B2 | Image focusing method and apparatus for wellbore resistivity imaging | Physics | 28 | Expired |
| US4586137A | Method for generating variable well logging data composites | Physics | 18 | Expired |
| US6025722A | Azimuthally segmented resistivity measuring apparatus and method | Physics | 13 | Expired |
| US7576543B2 | Apparatus and method for resistivity measurements during rotational drilling | Physics | 10 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.