Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Ian Marsh — 2 Patents

DUDew Engineering And Development Ulc: 2 patents #9 of 29Top 35%
Ottawa, CA: #2,643 of 6,399 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Ian Marsh has been granted 2 US patents while listed as an inventor at Dew Engineering And Development Ulc. The first was granted in 2018 and the most recent in June 2020. Ian Marsh ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Ian Marsh in Ottawa, ON, CA.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10683044 Track changing apparatus and methods associated therewith Colin Campbell, Guy Carrier, Camil Giguere, Michael Harris, Jr., Neil Hutton +1 more 2020-06-16
9981704 Track changing apparatus and methods associated therewith Colin Campbell, Guy Carrier, Camil Giguere, Michael Harris, Jr., Neil Hutton +1 more 2018-05-29