Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Chad Hahn — 2 Patents

DMDouglas Machine: 2 patents #19 of 71Top 30%
Alexandria, MN: #47 of 148 inventorsTop 35%
Minnesota: #24,068 of 52,454 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Chad Hahn has been granted 2 US patents while listed as an inventor at Douglas Machine. The first was granted in 2007 and the most recent in May 2009. Chad Hahn ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Chad Hahn in Alexandria, MN, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7533768 Retractable transfer device metering apparatus and methods Daniel Floding, Thomas H. Peterman, Irvan Leo Pazdernik, Richard Jerome Schoeneck, Paul Howard Wagner +1 more 2009-05-19
7156607 Carton stacking apparatus and method David L. Anderson, Jason Lattimer 2007-01-02