Inventor
TANAKA KOJIRO
JP21 patents
⚠️ This page may combine multiple inventors who share the name “TANAKA KOJIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO INSTR & ELECTRONICS
17 patentsUS4395139AJul 26, 1983
Temperature detecting device
SEIKO INSTR & ELECTRONICS60 citations95
US4095405AJun 20, 1978
Electronic watch
SEIKO INSTR & ELECTRONICS46 citations92
US4293782AOct 6, 1981
Voltage detecting circuit
SEIKO INSTR & ELECTRONICS26 citations80
US4639755AJan 27, 1987
Thermosensitive semiconductor device using Darlington circuit
SEIKO INSTR & ELECTRONICS16 citations73
US4329700AMay 11, 1982
Semi-conductor inverter using complementary junction field effect transistor pair
SEIKO INSTR & ELECTRONICS8 citations73
US4138613AFeb 6, 1979
Switching circuit
SEIKO INSTR & ELECTRONICS13 citations73
US4087665AMay 2, 1978
Switching system
SEIKO INSTR & ELECTRONICS9 citations73
US4043112AAug 23, 1977
Electronic timepiece having a battery voltage monitor
SEIKO INSTR & ELECTRONICS17 citations73
US3982387ASep 28, 1976
Solid state electronic timepiece
SEIKO INSTR & ELECTRONICS13 citations73
US4072004AFeb 7, 1978
Switching construction for a handy electronic device
SEIKO INSTR & ELECTRONICS16 citations72
US4163360AAug 7, 1979
Timer device
SEIKO INSTR & ELECTRONICS11 citations71
US4398833AAug 16, 1983
Electronic timepiece
SEIKO INSTR & ELECTRONICS5 citations62
US4102122AJul 25, 1978
Electronic watch
SEIKO INSTR & ELECTRONICS4 citations62
US4095407AJun 20, 1978
Oscillating and dividing circuit having level shifter for electronic timepiece
SEIKO INSTR & ELECTRONICS4 citations62
US4085575AApr 25, 1978
Digital electronic timepiece
SEIKO INSTR & ELECTRONICS3 citations62
US4045951ASep 6, 1977
Digital electronic timepiece
SEIKO INSTR & ELECTRONICS5 citations62
US4374332AFeb 15, 1983
Cascade type CMOS semiconductor device
SEIKO INSTR & ELECTRONICS5 citations59