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USPTO Patent Rankings Data through Dec 31, 2025
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Robert Hamilton — 3 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Moreno Valley, CA: #32 of 190 inventorsTop 20%
California: #150,760 of 386,348 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Robert Hamilton has been granted 3 US patents while listed as an inventor at Unknown. The first was granted in 1997 and the most recent in May 2022. Robert Hamilton ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Robert Hamilton in Moreno Valley, CA, US.

Patents per Year

Patents granted per year, 1997 to 2022Bar chart with a peak of 1 patents in 1997.peak 11997: 1 patents19972018: 1 patents20182022: 1 patents2022

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
D951597 Hat bill — 2022-05-17
D806366 Hat bill — 2018-01-02
5607387 Orthopedic splint James C. Martin, Randall S. Kilburn, Mary J. Schmalz, Brian Palmer 1997-03-04

Frequent Collaborators

Mary J. Schmalz1 shared
James C. Martin1 shared
Brian Palmer1 shared
Randall S. Kilburn1 shared

Nearby-Ranked Inventors

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Hangfeng Li3
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Debbie Maloyd3
Ethan Alexander Garrett3
Paul Sabatka3
Sergii Bomko3