RI

Rikizo Ishikawa

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
📍 Ibaraki, JP: #4,343 of 6,779 inventorsTop 65%
Overall (All Time): #4,102,461 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4306274 Disc ceramic capacitor Tokio Yamagiwa, Yuzuru Kamata, Yasuro Hori, Jun Ozawa 1981-12-15