IS

Isamu Sanpei

HI Hitachi: 1 patents #814 of 2,935Top 30%
📍 Kitaibaraki, JP: #4 of 15 inventorsTop 30%
Overall (1989): #102,046 of 140,708Top 75%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4825270 Gate turn-off thyristor Yukimasa Satou, Tsutomu Yatsuo, Saburo Oikawa 1989-04-25