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

Eizaburo Yoshizumi

Overall (All Time): #4,099,073 of 4,157,543Top 100%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4296379 Ground prospecting method utilizing electrical resistivity measurements for measuring the resistivity of unit blocks of the ground 1981-10-20