KW

Koichi Wajima

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #4,115,066 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4210924 Semiconductor controlled rectifier with configured cathode to eliminate hot-spots Katsumi Akabane, Isao Kojima, Yoshikazu Takita, Soushi Suzuki, Yasuhiko Ikeda +1 more 1980-07-01