Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Roy Armstrong — 2 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Waltham, MA: #841 of 1,656 inventorsTop 55%
Massachusetts: #42,563 of 88,656 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Roy Armstrong has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 1980 and the most recent in May 2021. Roy Armstrong ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Roy Armstrong in Waltham, MA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11014843 Field remote sensing system for real-time quantification of total suspended solids (TSS) in surface waters from above-water spectral measurements 2021-05-25
4193600 Cribbage scoring device William M. Kahn 1980-03-18