Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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William E. Siddall — 3 Patents

IBM: 3 patents #26,335 of 70,183Top 40%
Chapel Hill, NC: #800 of 1,999 inventorsTop 45%
North Carolina: #14,708 of 45,564 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
William E. Siddall has been granted 3 US patents while listed as an inventor at IBM. The first was granted in 1989 and the most recent in June 1994. William E. Siddall ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list William E. Siddall in Chapel Hill, NC, US.

Patents per Year

Patents granted per year, 1989 to 1994Bar chart with a peak of 1 patents in 1989.peak 11989: 1 patents19891990: 1 patents19901994: 1 patents1994

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5321815 Route selection using cached partial trees in a data communications network Leo J. Bartolanzo, Jr., Robert Clouston, John E. McGinn 1994-06-14 $26,184,000
4967345 Method of selecting least weight routes in a communications network Kathryn E. Clarke, John E. Drake, Diane P. Pozefsky 1990-10-30 $20,407,000
4873517 Method for selecting least weight end node to end node route in a data communications network Alan E. Baratz, Kathryn E. Clarke, Melinda R. Pollard, Diane P. Pozefsky, Lee M. Rafalow +1 more 1989-10-10 $17,322,000