Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
JR

John Mark Royle — 17 Patents

RLRadiodetection Limited: 13 patents #2 of 53Top 4%
MEMetrotech: 4 patents #6 of 40Top 15%
Exeter, GB: #4 of 117 inventorsTop 4%
Overall (All Time): #263,971 of 4,157,543Top 7%
17 Patents All Time
John Mark Royle has been granted 17 US patents while listed as an inventor at Radiodetection Limited. The first was granted in 2003 and the most recent in November 2020. John Mark Royle ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list John Mark Royle in Exeter, GB.

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
10833901 Signal select in underground line location Stephen John Petherick, George Mainescu, Ion Dracea, Razvan Gabriel Stefanoiu 2020-11-10
10338263 Signal processing for a cable locating instrument Stephen John Petherick 2019-07-02
10310130 Cable detection apparatus with a comb filter Johan Overby 2019-06-04
9473203 Signal select in underground line location Stephen John Petherick, George Mainescu, Ion Dracea, Razvan Gabriel Stefanoiu 2016-10-18
8566043 Detector for calculating the distortion of an electromagnetic field produced by a buried current carrying conductor Richard David Pearson 2013-10-22
8183851 Detector for calculating a depth of a buried conductor Richard David Pearson 2012-05-22
8125210 Detector for calculating the depth of a buried conductor Richard David Pearson 2012-02-28
8058874 System for and method of detecting a buried conductor Jeff Thompson 2011-11-15
7994770 Transmitter of a system for detecting a buried conductor Richard David Pearson 2011-08-09
7969137 System for and method of detecting a buried conductor 2011-06-28
7847556 Detector for detecting a buried current carrying conductor 2010-12-07
7567875 Enhanced sonde recognition 2009-07-28
7310584 Enhanced sonde recognition 2007-12-18
7184951 Methods and systems for generating phase-derivative sound James Ian King, Richard David Pearson 2007-02-27
6968296 Cable detector with decimating filter and filtering method 2005-11-22
6642796 Digital phase-quadrature oscillator 2003-11-04
6617856 Electronic marker locator system and method Richard David Pearson 2003-09-09