Inventor
SAMPEI TOHRU
JP17 patents
⚠️ This page may combine multiple inventors who share the name “SAMPEI TOHRU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
16 patentsUS4435832AMar 6, 1984
Speech synthesizer having speech time stretch and compression functions
HITACHI LTD94 citations95
US4401971AAug 30, 1983
Alarm device for a vehicle including priority control for plural alarm conditions
HITACHI LTD105 citations95
US3961280AJun 1, 1976
Amplifier circuit having power supply voltage responsive to amplitude of input signal
HITACHI LTD40 citations92
US4443741AApr 17, 1984
Drive circuit for electroluminescent element
HITACHI LTD41 citations91
US4422109ADec 20, 1983
Magnetic recording and reproducing apparatus automatically adjustable to each individual magnetic tape
HITACHI LTD46 citations91
US4551777ANov 5, 1985
Tracking servo system for magnetic recording and reproducing apparatus using flexible magnetic disk
HITACHI LTD24 citations82
US4613920ASep 23, 1986
Magnetic head for magnetic disk
HITACHI LTD8 citations73
US4422108ADec 20, 1983
Tape recorder
HITACHI LTD11 citations73
US4168471ASep 18, 1979
Source follower circuit using FETs
HITACHI LTD14 citations73
US4163197AJul 31, 1979
Audio-frequency power amplifier
HITACHI LTD8 citations73
US4100501AJul 11, 1978
Audio frequency power amplifier
HITACHI LTD8 citations73
US4068187AJan 10, 1978
Audio-frequency power amplifiers
HITACHI LTD7 citations73
US5084786AJan 28, 1992
Magnetic tape memory apparatus with axially displaced heads enabling after recording and verification
HITACHI LTD17 citations70
US4796140AJan 3, 1989
Removable disk construction
HITACHI LTD15 citations69
US4045744AAug 30, 1977
Low-frequency power amplifier
HITACHI LTD3 citations62
US4390747AJun 28, 1983
Speech analyzer
HITACHI LTD5 citations61