CF

Carlos F. Franca da Fonseca

IBM: 5 patents #18,733 of 70,183Top 30%
Overall (All Time): #986,879 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
10033728 CAPTCHA challenge incorporating obfuscated characters Michael S. Brown, Neil I. Readshaw 2018-07-24
9699176 CAPTCHA challenge incorporating obfuscated characters Michael S. Brown, Neil I. Readshaw 2017-07-04
9525686 Captcha challenge incorporating obfuscated characters Michael S. Brown, Neil I. Readshaw 2016-12-20
9372974 CAPTCHA challenge incorporating obfuscated characters Michael S. Brown, Neil I. Readshaw 2016-06-21
9338162 CAPTCHA challenge incorporating obfuscated characters Michael S. Brown, Neil I. Readshaw 2016-05-10