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

Daniel Campbell — 1 Patent

HAHach: 1 patents #109 of 214Top 55%
Fort Collins, CO: #2,188 of 3,421 inventorsTop 65%
Colorado: #24,258 of 40,980 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Daniel Campbell has been granted 1 US patent while listed as an inventor at Hach. All of these patents were granted in 1998. Daniel Campbell ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Daniel Campbell in Fort Collins, CO, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5849592 Carrierless sequential injection analysis Cy H. Pollema, Leon Moore 1998-12-15