Inventor
MINAKUCHI HIROSHI
34 patents
⚠️ This page may combine multiple inventors who share the name “MINAKUCHI HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
31 patentsUS4633150ADec 30, 1986
Driving circuit for brushless DC motors
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD49 citations92
US4277754AJul 7, 1981
Digital frequency-phase comparator
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD29 citations92
US4207539AJun 10, 1980
Frequency synthesizer
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations82
US3967200AJun 29, 1976
Speed detector for use with miniature DC motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD30 citations78
US4587665AMay 6, 1986
Binary counter having buffer and coincidence circuits for the switched bistable stages thereof
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations74
US4559488ADec 17, 1985
Integrated precision reference source
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations74
US4331926AMay 25, 1982
Programmable frequency divider
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations74
US4296380AOct 20, 1981
Programmable digital frequency divider for synthesizing signals at desired frequency
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations74
US4296407AOct 20, 1981
Digital frequency synthesizer with frequency divider programmable in response to stored digital control signal
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations74
US4278925AJul 14, 1981
Phase-locked loop speed control system using programmable counter for frequency pulling
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations74
US4203061AMay 13, 1980
Rotational speed indicating apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations74
US4177412ADec 4, 1979
Closed loop rotational speed control system having means for generating a PNM signal for an electric motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations74
US4149116AApr 10, 1979
Motor speed control system
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations74
US4115831ASep 19, 1978
Velocity detecting apparatus insensitive to noise
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations74
US4114075ASep 12, 1978
Rotation control system
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations74
US4636696AJan 13, 1987
Servo system
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations73
US4189666AFeb 19, 1980
Speed control system for small size D-C electric motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations71
US4015180AMar 29, 1977
Speed regulating devices for rotary machines or the like
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations69
US4473819ASep 25, 1984
Digital-to-analog conversion apparatus with a variable active-level
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations63
US4379238AApr 5, 1983
Integrated signal processing circuit
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations63
US4301422ANov 17, 1981
Frequency synthesizer
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations63
US4242618ADec 30, 1980
Speed controller for rotary machine
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations63
US4191927AMar 4, 1980
Mixing circuit for digital signals
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations63
US4184114AJan 15, 1980
Arrangement for indicating revolutional speed of a revolving body
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations63
US4153864AMay 8, 1979
Motor speed regulator
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations63
US4081698AMar 28, 1978
Step-to-impulse conversion circuit
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations63
US3970909AJul 20, 1976
Constant speed regulator for DC motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations63
US3961207AJun 1, 1976
Output retaining electronic circuit
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations63
US4879754ANov 7, 1989
Speed controller
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations54
US4509182AApr 2, 1985
Binary counter
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1 citations52
US4318012AMar 2, 1982
Input signal processing circuit formed as an integrated circuit
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1 citations52
NIPPON ELECTRIC CO
2 patentsUS4024445AMay 17, 1977
Circuit for producing for a feedback motor speed control loop an error signal immune to a change in the source voltage
NIPPON ELECTRIC CO5 citations62
US4028602AJun 7, 1977
Control circuit of an electric motor comprising an output transistor of NPN type
NIPPON ELECTRIC CO2 citations56