Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Stephen Duffy — 5 Patents

IBM: 2 patents #32,909 of 70,183Top 50%
CLCirrus Logic: 1 patents #703 of 1,131Top 65%
KTKeysight Technologies: 1 patents #228 of 567Top 45%
Broadcom: 1 patents #5,859 of 9,346Top 65%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Stephen Duffy has been granted 5 US patents while listed as an inventor at IBM. The first was granted in 2011 and the most recent in February 2022. Stephen Duffy ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Stephen Duffy in Glasgow, NC, GB.

Patents per Year

Patents granted per year, 2011 to 2022Bar chart with a peak of 1 patents in 2011.peak 12011: 1 patents20112019: 1 patents20192020: 1 patents20202021: 1 patents20212022: 1 patents2022

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11240878 System and method for test and/or calibration of multi-channel RF communication devices Xu Zhao, Hong-Wei Kong, Ya Jing 2022-02-01 $62,438,000
10884754 Infinite processor thread balancing Gregory W. Alexander, David S. Hutton, Christian Jacobi, Anthony Saporito, Somin Song 2021-01-05 $2,293,000
10558464 Infinite processor thread balancing Gregory W. Alexander, David S. Hutton, Christian Jacobi, Anthony Saporito, Somin Song 2020-02-11 $2,410,000
10343894 MEMS device and process Colin Robert Jenkins, Tsjerk Hans Hoekstra 2019-07-09 $4,109,000
7940756 Dynamic tagging of network data based on service level objectives Hans F. van Rietschote, Slava Kritov 2011-05-10 $5,991,000