Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Douglas A. Harmon — 2 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Amboy, WA: #1 of 9 inventorsTop 15%
Washington: #35,700 of 76,902 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Douglas A. Harmon has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 1999 and the most recent in April 2005. Douglas A. Harmon ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Douglas A. Harmon in Amboy, WA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6877232 Marshmallow toasting utensil and method Eric Russell Clark, II, Todd A. Barnes 2005-04-12
5906052 Utensil which indicates when the inside of a marshmallow is melted 1999-05-25