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USPTO Patent Rankings Data through Dec 31, 2025
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Charles B. Cunningham — 4 Patents

SCSpecialized Bicycle Components: 1 patents #106 of 157Top 70%
Nec: 1 patents #7,928 of 14,502Top 55%
Fairfax, CA: #47 of 140 inventorsTop 35%
California: #126,026 of 386,348 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Charles B. Cunningham has been granted 4 US patents while listed as an inventor at Nec. The first was granted in 1988 and the most recent in April 1992. Charles B. Cunningham ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Charles B. Cunningham in Fairfax, CA, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
D325589 Grease gun Stephen Potts, Mark Slate 1992-04-21
5088535 Bicycle or motorcycle tire tread Stephen Potts, Mark Slate, James H. Merz 1992-02-18
4765443 Caliper brake for mountain bicycles having wide tires 1988-08-23
4763957 Bicycle hub constructions and lubrication thereof Paul W. Poehlmann, Mark Slate, Stephen Potts 1988-08-16