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

David E. Helgerson — 7 Patents

AUAutomation: 1 patents #20 of 55Top 40%
Plymouth, MN: #370 of 1,545 inventorsTop 25%
Minnesota: #10,472 of 52,454 inventorsTop 20%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
David E. Helgerson has been granted 7 US patents while listed as an inventor at Automation. The first was granted in 1996 and the most recent in August 2025. David E. Helgerson ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list David E. Helgerson in Plymouth, MN, US.

Patents per Year

Patents granted per year, 1996 to 2025Bar chart with a peak of 2 patents in 1996.peak 21996: 2 patents19962005: 1 patents20052007: 1 patents20072009: 1 patents20092010: 1 patents20102025: 1 patents2025

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
12384635 Adjustable tray stacker/destacker assembly Reed A. Bailey 2025-08-12
7748520 Slip roller conveyor Brian D. Koenig 2010-07-06
7503450 Long roller slip conveyor Steven A. Jensen, Joshua D. Krause, Brian D. Koenig, Robert J. Robinson 2009-03-17
7175018 Conveyor assembly Brian D. Koenig, Steven A. Jensen, John Fresonke, Timothy J. Hall 2007-02-13
6959804 Conveyor assembly Brian D. Koenig, Steven A. Jensen, John Fresonke, Timothy J. Hall 2005-11-01
5558205 Conveyors Brian R. Lee 1996-09-24
5558206 Conveyor technology Brian R. Lee 1996-09-24