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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Derek J. Stone — 1 Patent

CPCipher Data Products: 1 patents #11 of 24Top 50%
San Diego, CA: #15,804 of 23,606 inventorsTop 70%
California: #249,524 of 386,348 inventorsTop 65%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Derek J. Stone has been granted 1 US patent while listed as an inventor at Cipher Data Products. All of these patents were granted in 1981. Derek J. Stone ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Derek J. Stone in San Diego, CA, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4243186 Low profile magnetic tape drive with vacuum actuated auto-threading Jack Peter, Karl B. Offerman, Larry D. Brown 1981-01-06