Inventor
KAWADA SHIGEKI
JP43 patents
⚠️ This page may combine multiple inventors who share the name “KAWADA SHIGEKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU FANUC LTD
22 patentsUS4406959ASep 27, 1983
Rotary electric motor
FUJITSU FANUC LTD77 citations94
US4370614AJan 25, 1983
Speed and direction detector
FUJITSU FANUC LTD37 citations93
US4319177AMar 9, 1982
Operation control apparatus for AC motors
FUJITSU FANUC LTD36 citations93
US4291265ASep 22, 1981
Protective system for inverter circuit used in driving AC motors
FUJITSU FANUC LTD33 citations93
US4426610AJan 17, 1984
Induction motor control system
FUJITSU FANUC LTD31 citations92
US4322671AMar 30, 1982
Induction motor drive apparatus
FUJITSU FANUC LTD36 citations92
US4361794ANov 30, 1982
Induction motor drive apparatus
FUJITSU FANUC LTD27 citations82
US4353023AOct 5, 1982
Operation control apparatus for AC motors
FUJITSU FANUC LTD24 citations82
US4333042AJun 1, 1982
System for driving a motor by a pulse width modulation inverter
FUJITSU FANUC LTD26 citations82
US4330832AMay 18, 1982
Cutter feed rate control system
FUJITSU FANUC LTD25 citations82
US4275342AJun 23, 1981
Abnormality detecting system for DC motor control apparatus
FUJITSU FANUC LTD20 citations82
US4327315AApr 27, 1982
Induction motor drive apparatus
FUJITSU FANUC LTD21 citations81
US4284932AAug 18, 1981
System for driving DC motor
FUJITSU FANUC LTD16 citations74
US4207504AJun 10, 1980
Spindle control system
FUJITSU FANUC LTD14 citations74
US4181875AJan 1, 1980
Drive circuit for a DC motor
FUJITSU FANUC LTD10 citations74
US4268782AMay 19, 1981
Control system for a DC motor
FUJITSU FANUC LTD14 citations73
US4088933AMay 9, 1978
DC Motor phase control system
FUJITSU FANUC LTD7 citations73
US4268781AMay 19, 1981
DC Motor drive system
FUJITSU FANUC LTD19 citations71
US4300079ANov 10, 1981
DC Motor control system
FUJITSU FANUC LTD18 citations70
US4518916AMay 21, 1985
System for detecting rotational speed
FUJITSU FANUC LTD2 citations63
US4471285ASep 11, 1984
System for variable speed operation of induction motors
FUJITSU FANUC LTD2 citations63
US4284939AAug 18, 1981
Device for detecting opposite phase and open phase
FUJITSU FANUC LTD5 citations62
FANUC LTD
16 patentsUS4631807ADec 30, 1986
Method of manufacturing a permanent-magnet field rotor
FANUC LTD59 citations96
US4543506ASep 24, 1985
Permanant magnet field type rotor structure for an electric machine
FANUC LTD72 citations96
US4700097AOct 13, 1987
Synchronous machine
FANUC LTD47 citations92
US4661736AApr 28, 1987
Rotor for a synchronous motor
FANUC LTD29 citations92
US4626725ADec 2, 1986
Synchronous rotary machine
FANUC LTD36 citations92
US4714852ADec 22, 1987
Permanent-magnet field synchronous motor
FANUC LTD38 citations91
US4485320ANov 27, 1984
Welded stator using non-magnetic bars in specially shaped lamination slots
FANUC LTD42 citations90
US4456868AJun 26, 1984
Method and apparatus for controlling AC motors
FANUC LTD49 citations89
US4538084AAug 27, 1985
Stator of motor
FANUC LTD22 citations82
US5334924AAug 2, 1994
Induction motor control system
FANUC LTD10 citations74
US4796352AJan 10, 1989
AC servomotor and a method of manufacturing the same
FANUC LTD15 citations74
US4748360AMay 31, 1988
Rotor for a synchronous motor
FANUC LTD19 citations74
US4614020ASep 30, 1986
Mechanism and method for automatically changing tools
FANUC LTD10 citations74
US4482854ANov 13, 1984
Inverter circuit
FANUC LTD16 citations73
US5281903AJan 25, 1994
Method for drivingly controlling a variable reluctance type motor
FANUC LTD10 citations72
US4663550AMay 5, 1987
Shaft for an electric motor with DC brake
FANUC LTD18 citations70
SEIKO EPSON CORP
4 patentsUS11492506B2Nov 8, 2022
Aqueous ink jet composition
SEIKO EPSON CORP0 citations61
US10487227B2Nov 26, 2019
Ink set and recording method
SEIKO EPSON CORP0 citations51
US11866596B2Jan 9, 2024
Aqueous ink jet composition
SEIKO EPSON CORP0 citations48
US11591489B2Feb 28, 2023
Aqueous ink jet composition
SEIKO EPSON CORP0 citations48