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

David Chadwell — 9 Patents

HEHarper Engineering: 9 patents #1 of 3Top 35%
Renton, WA: #167 of 1,385 inventorsTop 15%
Washington: #11,701 of 76,902 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
David Chadwell has been granted 9 US patents while listed as an inventor at Harper Engineering. The first was granted in 2019 and the most recent in June 2025. David Chadwell ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list David Chadwell in Renton, WA, US.

Patents per Year

Patents granted per year, 2019 to 2025Bar chart with a peak of 4 patents in 2020.peak 42019: 1 patents20192020: 4 patents20202021: 1 patents20212022: 2 patents20222025: 1 patents2025

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
12326025 Integrated stowage bin assembly Richard J. LaConte 2025-06-10
11519211 Integrated stowage bin assembly Richard J. LaConte 2022-12-06
11352823 Integrated stowage bin assembly Richard J. LaConte 2022-06-07
11180258 Payload attachment fitting and methods to use the same 2021-11-23
10801244 Integrated stowage bin assembly Richard J. LaConte 2020-10-13
10760315 Integrated stowage bin assembly Richard J. LaConte 2020-09-01
10680395 Universal power interface system and methods to use the same 2020-06-09
10597866 Panel assemblies and methods to assemble the same 2020-03-24
10309098 Panel assemblies and methods to assemble the same 2019-06-04