John Mark Royle
17Patents
5h-index
8Co-inventors
55Inventor score
Filing activity: Feb 15, 2002 → Oct 17, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6617856B1 | Electronic marker locator system and method | Physics | 65 | Expired |
| US6968296B2 | Cable detector with decimating filter and filtering method | Electricity | 50 | Expired |
| US7310584B2 | Enhanced sonde recognition | Physics | 45 | Expired |
| US7969137B2 | System for and method of detecting a buried conductor | Physics | 9 | Active |
| US7994770B2 | Transmitter of a system for detecting a buried conductor | Electricity | 6 | Active |
| US7847556B2 | Detector for detecting a buried current carrying conductor | Physics | 5 | Active |
| US7184951B2 | Methods and systems for generating phase-derivative sound | Physics | 5 | Expired |
| US8566043B2 | Detector for calculating the distortion of an electromagnetic field produced by a buried current carrying conductor | Physics | 4 | Active |
| US8058874B2 | System for and method of detecting a buried conductor | Physics | 4 | Active |
| US8183851B2 | Detector for calculating a depth of a buried conductor | Physics | 4 | Active |
| US6642796B2 | Digital phase-quadrature oscillator | Physics | 3 | Expired |
| US8125210B2 | Detector for calculating the depth of a buried conductor | Physics | 3 | Active |
| US9473203B2 | Signal select in underground line location | Physics | 2 | Active |
| US10833901B2 | Signal select in underground line location | Physics | 1 | Active |
| US7567875B2 | Enhanced sonde recognition | Physics | 0 | Active |
| US10310130B2 | Cable detection apparatus with a comb filter | Physics | 0 | Active |
| US10338263B2 | Signal processing for a cable locating instrument | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.