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USPTO Patent Rankings Data through Dec 31, 2025
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Robert Keith Cash — 1 Patent

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Knoxville, TN: #1,674 of 2,927 inventorsTop 60%
Tennessee: #11,054 of 20,272 inventorsTop 55%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Robert Keith Cash has been granted 1 US patent while listed as an inventor at Unknown. All of these patents were granted in 2012. Robert Keith Cash ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Robert Keith Cash in Knoxville, TN, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8191298 Magazine quick-release blocking apparatus and method Daniel James Brown 2012-06-05