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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Rtr Technologies › David Farrell
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David Farrell — 13 Patents

RTRtr Technologies: 6 patents #1 of 3Top 35%
VSVeritas Medical Solutions: 5 patents #1 of 3Top 35%
Loveland, CO: #83 of 931 inventorsTop 9%
Colorado: #3,472 of 40,980 inventorsTop 9%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
David Farrell has been granted 13 US patents while listed as an inventor at Rtr Technologies. The first was granted in 2014 and the most recent in February 2025. David Farrell ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list David Farrell in Loveland, CO, US.

Patents per Year

Patents granted per year, 2014 to 2025Bar chart with a peak of 2 patents in 2017.peak 22014: 1 patents20142015: 1 patents20152016: 1 patents20162017: 2 patents20172018: 1 patents20182021: 1 patents20212022: 1 patents20222023: 2 patents20232024: 2 patents20242025: 1 patents2025

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
12216219 Radio frequency (RF) ranging in propagation limited RF environments utilizing aerial vehicles Thomas Pattison 2025-02-04
12105187 Dual frequency ranging with calculated integer wavelength delays in RF environments Thomas Pattison 2024-10-01
11971492 Radio frequency (RF) ranging in propagation limited RF environments utilizing aerial vehicles Thomas Pattison 2024-04-30
11719806 Dual frequency ranging with calculated integer wavelength delays in RF environments Thomas Pattison 2023-08-08
11693127 Radio frequency (RF) ranging in propagation limited RF environments utilizing aerial vehicles Thomas Pattison 2023-07-04
11275181 Radio frequency (RF) ranging in propagation limited RF environments utilizing aerial vehicles Thomas Pattison 2022-03-15
11035947 Radio frequency (RF) ranging in propagation limited RF environments Thomas Pattison 2021-06-15
10101435 Radio frequency (RF) ranging in RF-opaque environments Thomas Pattison 2018-10-16
9816267 Masonry block with continuously curved surfaces — 2017-11-14
9617776 Motor driven door assembly Robert J. Farrell 2017-04-11
9458661 Sliding door with tortuous leading edge path Herbert Todd Ferrence 2016-10-04
9183957 Masonry block with continuously curved surfaces — 2015-11-10
8627601 Rotating radiation shielded entrance assembly — 2014-01-14

Frequent Collaborators

Thomas Pattison8 shared
Herbert Todd Ferrence1 shared
Robert J. Farrell1 shared

Nearby-Ranked Inventors

Jianping Shen13
Eric John Telfeyan13
George R. Breiwa, III13
Thomas Sugar13
Andrew Howley13
Howard Halpern13
Po-Yuan Wang13
Douglas Vanesko13
Tanuj Trivedi13