Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Derrick Lee Hamm — 4 Patents

PEPioneer Eclipse: 1 patents #4 of 14Top 30%
Sparta, NC: #3 of 13 inventorsTop 25%
North Carolina: #12,022 of 45,564 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Derrick Lee Hamm has been granted 4 US patents while listed as an inventor at Pioneer Eclipse. The first was granted in 2002 and the most recent in April 2020. Derrick Lee Hamm ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Derrick Lee Hamm in Sparta, NC, US.

Patents per Year

Patents granted per year, 2002 to 2020Bar chart with a peak of 2 patents in 2012.peak 22002: 1 patents20022012: 2 patents20122020: 1 patents2020

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
10632586 Two speed multi head wood floor sanding system Shawn Wright 2020-04-28
8251780 Floor grinding machine and grinding head unit therefor Willis D. Ward, John E. Smith 2012-08-28
8147297 Surface grinding machine and grinding head therefor John E. Smith, Willis D. Ward 2012-04-03
6353957 Floor maintenance machine including gearbox arrangement Jack Wolfe, Mike Travers Chappell 2002-03-12