TO

Takuzo Ogawa

HI Hitachi: 8 patents #5,191 of 28,497Top 20%
Overall (All Time): #672,014 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
4354121 Field controlled thyristor control circuit with additional FCT in reverse bias circuit Yoshio Terasawa, Kenji Miyata, Saburo Oikawa, Susumu Murakami, Masahiro Okamura 1982-10-12
4290830 Method of selectively diffusing aluminium into a silicon semiconductor substrate Yasuhiro Mochizuki, Sadao Okano 1981-09-22
4262295 Semiconductor device Sadao Okano, Hiroaki Hachino 1981-04-14
4223328 Field controlled thyristor with dual resistivity field layer Yoshio Terasawa, Kenji Miyata, Masayoshi Naito, Masahiro Okamura 1980-09-16
4219832 Thyristor having low on-state voltage with low areal doping emitter region Masayoshi Naito, Takahiro Nagano 1980-08-26
4210464 Method of simultaneously controlling the lifetimes and leakage currents in semiconductor devices by hot electron irradiation through passivating glass layers Tomoyuki Tanaka, Masahiro Okamura, Toshikatsu Shirasawa 1980-07-01
4200877 Temperature-compensated voltage reference diode with intermediate polycrystalline layer Takaya Suzuki, Mitsuru Ura 1980-04-29
4193826 Vapor phase diffusion of aluminum with or without boron Yasuhiro Mochizuki, Hiroaki Hachino, Yasumichi Yasuda, Yutaka Misawa 1980-03-18