Inventor
ISHIGAKI YOSHIO
25 patents
⚠️ This page may combine multiple inventors who share the name “ISHIGAKI YOSHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
21 patentsUS4242714ADec 30, 1980
Current control circuit
SONY CORP44 citations92
US4206388AJun 3, 1980
Current control circuit for horizontal deflection coil of television receiver
SONY CORP46 citations92
US4358769ANov 9, 1982
Loop antenna apparatus with variable directivity
SONY CORP37 citations90
US4280139AJul 21, 1981
Muting circuit for a television receiver
SONY CORP24 citations82
US4322855AMar 30, 1982
Remote control apparatus
SONY CORP21 citations81
US3968514AJul 6, 1976
Magnetic recording and/or reproducing apparatus
SONY CORP22 citations80
US4083019AApr 4, 1978
Current controlled emitter coupled multivibrator
SONY CORP16 citations74
US4021749AMay 3, 1977
Signal amplifying circuit
SONY CORP7 citations74
US3988598AOct 26, 1976
Multipurpose semiconductor circuits utilizing a novel semiconductor device
SONY CORP7 citations74
US4170785AOct 9, 1979
Video signal reproducing apparatus with electron beam scanning velocity modulation
SONY CORP16 citations73
US4081837AMar 28, 1978
Undesired signal canceller
SONY CORP7 citations73
US4012771AMar 15, 1977
Apparatus for recording and/or reproducing color video signals
SONY CORP14 citations73
US4570165AFeb 11, 1986
Adjustable loop and dipole antenna
SONY CORP19 citations71
US4338606AJul 6, 1982
Antenna system with variable directivity
SONY CORP15 citations71
US4223342ASep 16, 1980
Circuit for improving the frequency characteristic of a color television signal
SONY CORP16 citations71
US4101928AJul 18, 1978
Color television receiver
SONY CORP7 citations70
US3988692AOct 26, 1976
Gain control circuits
SONY CORP2 citations63
US3980900ASep 14, 1976
Multipurpose switching circuits utilizing a novel semiconductor device
SONY CORP6 citations63
US3976951AAug 24, 1976
Gain control circuits utilizing a novel semiconductor device
SONY CORP6 citations63
US4390818AJun 28, 1983
Television receiver
SONY CORP1 citations52
US4322742AMar 30, 1982
Method and apparatus for improving the sharpness of a video picture
SONY CORP1 citations51