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

Justin C. Logan — 92 Patents

EEEvolution Engineering: 87 patents #2 of 37Top 6%
Calgary, CA: #4 of 5,407 inventorsTop 1%
Overall (All Time): #17,129 of 4,157,543Top 1%
92 Patents All Time
Justin C. Logan has been granted 92 US patents while listed as an inventor at Evolution Engineering. The first was granted in 2016 and the most recent in May 2025. Justin C. Logan ranks #17,129 of 4,157,543 US inventors in our database (top 0.41%). Patent records list Justin C. Logan in Calgary, AB, CA.

Issued Patents All Time

Showing 1–25 of 92 patents

Patent #TitleCo-InventorsDate
12297735 Centralizer for downhole probes Aaron W. Logan, Patrick R. Derkacz 2025-05-13
11795769 Centralizer for downhole probes Aaron W. Logan, Patrick R. Derkacz 2023-10-24
11686159 Torsion resistant gap sub Luke Anthony Stack, Aaron W. Logan, Mojtaba Kazemi Miraki, Patrick R. Derkacz, Gavin Gaw-Wae Lee +3 more 2023-06-27
11649720 Integrated downhole system with plural telemetry subsystems Aaron W. Logan, David A. Switzer, Jili Liu, Mingdong Xu 2023-05-16
11359483 Integrated downhole system with plural telemetry subsystems Aaron W. Logan, David A. Switzer, Jili Liu, Mingdong Xu 2022-06-14
11280437 Sealed gap sub Luke Anthony Stack, Aaron W. Logan, Patrick R. Derkacz, Gavin Gaw-Wae Lee, Hasan Alper Hepguvendik +4 more 2022-03-22
11215014 Preloadable connectors for tubing Patrick R. Derkacz, Luke Anthony Stack, Gavin Gaw-Wae Lee, Aaron W. Logan 2022-01-04
11213989 Downhole probe sleeves and methods for making probe sleeves Luke Anthony Stack, Aaron W. Logan, Patrick R. Derkacz 2022-01-04
11105159 Torsion resistant gap sub Luke Anthony Stack, Aaron W. Logan, Mojtaba Kazemi Miraki, Patrick R. Derkacz, Gavin Gaw-Wae Lee +3 more 2021-08-31
11085247 Securing means for in-tubing probe retainer Luke Anthony Stack, Aaron W. Logan, Patrick R. Derkacz, Kurtis West, Robert A. Harris 2021-08-10
11073015 Integrated downhole system with plural telemetry subsystems Aaron W. Logan, David A. Switzer, Jili Liu, Mingdong Xu 2021-07-27
11008858 Fluid pressure pulse generator for a telemetry tool Gavin Gaw-Wae Lee, Aaron W. Logan 2021-05-18
10954781 Multi-mode control of downhole tools Aaron W. Logan, Barry Daniel Buternowsky, Steven D. McLawchlin, David A. Switzer, Kurtis West 2021-03-23
10934784 Seal and sacrificial components for a drill string Patrick R. Derkacz, Aaron W. Logan, Angelica J. B. Francoeur, Jason B. Wackett, Danick R. J. Normandeau +1 more 2021-03-02
10871041 Centralizer for downhole probes Aaron W. Logan, Patrick R. Derkacz 2020-12-22
10837240 Seal and sacrificial components for a drill string Patrick R. Derkacz, Aaron W. Logan, Angelica J. B. Francoeur, Jason B. Wackett, Danick R. J. Normandeau +1 more 2020-11-17
10840482 Battery coil engaging members for downhole tools Aaron W. Logan 2020-11-17
10753201 Mud pulse telemetry apparatus with a pressure transducer and method of operating same Aaron W. Logan, Jili Liu, David A. Switzer 2020-08-25
10749149 Battery coil engaging members for downhole tools Aaron W. Logan 2020-08-18
10731459 Integrated downhole system with plural telemetry subsystems Aaron W. Logan, David A. Switzer, Jili Liu, Mingdong Xu 2020-08-04
10729029 Mounting and component holder apparatuses and assemblies for holding rigid components Aaron W. Logan, Jili Liu, David A. Switzer 2020-07-28
10662754 Directional drilling apparatus and methods Aaron W. Logan 2020-05-26
10648247 Centralizer for downhole probes Aaron W. Logan, Patrick R. Derkacz 2020-05-12
10641086 Pressure compensation device for a fluid pressure pulse generating apparatus Gavin Gaw-Wae Lee, Aaron W. Logan 2020-05-05
10641081 Device and method for retaining probe exterior wear sleeve Luke Anthony Stack, Aaron W. Logan 2020-05-05