Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
BY

Betty F. Yamakuchi

Chicago, IL: #7,538 of 13,327 inventorsTop 60%
Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #3,900,004 of 4,157,543Top 95%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4915383 Base for little league baseball field Muneyoshi Yamakuchi 1990-04-10