Inventor
TOKUNAGA MICHIO
12 patents
⚠️ This page may combine multiple inventors who share the name “TOKUNAGA MICHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
11 patentsUS4015143AMar 29, 1977
Semiconductor switch
HITACHI LTD20 citations81
US4465967AAug 14, 1984
Current supply circuit
HITACHI LTD22 citations80
US4125787ANov 14, 1978
Semiconductor switch circuit
HITACHI LTD20 citations80
US4112346ASep 5, 1978
Constant current circuit
HITACHI LTD8 citations73
US4058741ANov 15, 1977
Semiconductor switch circuit
HITACHI LTD9 citations73
US4041332AAug 9, 1977
Semiconductor switch device
HITACHI LTD8 citations73
US4039863AAug 2, 1977
Light activated semiconductor switch device
HITACHI LTD17 citations73
US4039864AAug 2, 1977
Semiconductor bidirectional switch circuit
HITACHI LTD8 citations73
US4039865AAug 2, 1977
Semiconductor switch
HITACHI LTD10 citations73
US4232234ANov 4, 1980
Semiconductor switch circuit
HITACHI LTD3 citations62
US4277696AJul 7, 1981
Semiconductor switch circuit
HITACHI LTD4 citations61