Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
RB

Risto Bell — 11 Patents

EFEfabless: 7 patents #3 of 12Top 25%
Cypress Semiconductor: 3 patents #674 of 1,866Top 40%
San Jose, CA: #5,902 of 32,062 inventorsTop 20%
California: #56,011 of 386,348 inventorsTop 15%
Overall (All Time): #435,149 of 4,157,543Top 15%
11 Patents All Time
Risto Bell has been granted 11 US patents while listed as an inventor at Efabless. The first was granted in 2003 and the most recent in October 2023. Risto Bell ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list Risto Bell in San Jose, CA, US.

Patents per Year

Patents granted per year, 2003 to 2023Bar chart with a peak of 3 patents in 2019.peak 32003: 1 patents20032004: 1 patents20042006: 1 patents20062019: 3 patents20192020: 1 patents20202021: 1 patents20212022: 1 patents20222023: 2 patents2023

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11775722 Systems and methods for obfuscating a circuit design Bertrand Irissou, John M. Hughes, Lucio Lanza, Mohamed K. Kassem, Michael S. Wishart +4 more 2023-10-03
11748541 Methods for engineering integrated circuit design and development Bertrand Irissou, John M. Hughes, Lucio Lanza, Mohamed K. Kassem, Michael S. Wishart +4 more 2023-09-05
11301609 Systems and methods for obfuscating a circuit design Bertrand Irissou, John M. Hughes, Lucio Lanza, Mohamed K. Kassem, Michael S. Wishart +4 more 2022-04-12
11182526 Methods for engineering integrated circuit design and development Bertrand Irissou, John M. Hughes, Lucio Lanza, Mohamed K. Kassem, Michael S. Wishart +4 more 2021-11-23
10671700 Systems and methods for obfuscating a circuit design Bertrand Irissou, John M. Hughes, Lucio Lanza, Mohamed K. Kassem, Michael S. Wishart +4 more 2020-06-02
10452802 Methods for engineering integrated circuit design and development Bertrand Irissou, John M. Hughes, Lucio Lanza, Mohamed K. Kassem, Michael S. Wishart +4 more 2019-10-22
10437953 Systems for engineering integrated circuit design and development Bertrand Irissou, John M. Hughes, Lucio Lanza, Mohamed K. Kassem, Michael S. Wishart +4 more 2019-10-08
10423748 Systems and methods for obfuscating a circuit design Bertrand Irissou, John M. Hughes, Lucio Lanza, Mohamed K. Kassem, Michael S. Wishart +4 more 2019-09-24
7062425 Method and apparatus for automated enumeration, simulation, identification and/or irradiation of device attributes J. Daniel Merchant 2006-06-13 $7,999,000
6678879 Method and apparatus for automated design of integrated circuits Alan R. Hawse, Dragomir Nikolic, Jarrod Brooks, James Daniel Merchant 2004-01-13 $11,709,000
6615393 Method and apparatus for performing electrical distance check 2003-09-02 $12,815,000