Hirokazu TAJIMA

Person

Suzuka-city, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Charger with inverter and inverter gate drive circuit
- Patent number 10,644,526
- Issue date May 5, 2020
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Controller for AC electric motor
- Patent number 10,479,219
- Issue date Nov 19, 2019
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Charger
- Patent number 10,252,626
- Issue date Apr 9, 2019
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Drive control apparatus
- Patent number 10,006,455
- Issue date Jun 26, 2018
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- G05 - CONTROLLING REGULATING
Information Patent Grant
Machine control device
- Patent number 8,222,851
- Issue date Jul 17, 2012
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Speed control device for electric motor
- Patent number 7,781,996
- Issue date Aug 24, 2010
- Fuji Electric Systems Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method for controlling AC motor
- Patent number 7,501,787
- Issue date Mar 10, 2009
- Fuji Electric FA Components & Systems Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Variable-speed controlling device for use with an induction motor
- Patent number 6,404,162
- Issue date Jun 11, 2002
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Speed sensorless vector control apparatus
- Patent number 6,377,018
- Issue date Apr 23, 2002
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Apparatus for calculating torque generated by induction motor
- Patent number 6,321,606
- Issue date Nov 27, 2001
- Fuji Electric Co., Ltd.
- Shinichi Ishii
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Speed control apparatus for induction motor
- Patent number 6,075,337
- Issue date Jun 13, 2000
- Fuji Electric Co., Ltd.
- Shinichi Ishii
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Variable speed controlling device for induction motor
- Patent number 5,959,429
- Issue date Sep 28, 1999
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Variable-speed control method and apparatus for AC motor
- Patent number 5,880,572
- Issue date Mar 9, 1999
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Variable speed controller for an AC motor
- Patent number 5,859,521
- Issue date Jan 12, 1999
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Variable speed controller for an induction motor
- Patent number 5,828,199
- Issue date Oct 27, 1998
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control apparatus for AC motor
- Patent number 5,734,251
- Issue date Mar 31, 1998
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for controlling an AC motor and detecting malf...
- Patent number 5,623,190
- Issue date Apr 22, 1997
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- G01 - MEASURING TESTING
Information Patent Grant
Variable speed control apparatus for induction motor
- Patent number 5,532,570
- Issue date Jul 2, 1996
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
CONTROLLER FOR AC ELECTRIC MOTOR
- Publication number 20190084431
- Publication date Mar 21, 2019
- Fuji Electric Co., Ltd.
- Hirokazu TAJIMA
- B60 - VEHICLES IN GENERAL
Information Patent Application
DRIVE CONTROL APPARATUS
- Publication number 20170254325
- Publication date Sep 7, 2017
- Fuji Electric Co., Ltd.
- Hirokazu TAJIMA
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
CHARGER
- Publication number 20160280082
- Publication date Sep 29, 2016
- Fuji Electric Co., Ltd.
- Hirokazu TAJIMA
- B60 - VEHICLES IN GENERAL
Information Patent Application
CHARGER
- Publication number 20160285297
- Publication date Sep 29, 2016
- Fuji Electric Co., Ltd.
- Hirokazu TAJIMA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
MACHINE CONTROL DEVICE
- Publication number 20100052594
- Publication date Mar 4, 2010
- Fuji Electric Systems Co., Ltd.
- Hirokazu TAJIMA
- B66 - HOISTING LIFTING HAULING
Information Patent Application
SPEED CONTROL DEVICE FOR ELECTRIC MOTOR
- Publication number 20070296361
- Publication date Dec 27, 2007
- FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.
- Hirokazu TAJIMA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Method for controlling AC motor
- Publication number 20070145939
- Publication date Jun 28, 2007
- Hirokazu Tajima
- G01 - MEASURING TESTING
Information Patent Application
Speed sensorless vector control apparatus
- Publication number 20010043048
- Publication date Nov 22, 2001
- Fuji Electric Co., Ltd.
- Hirokazu Tajima
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Hirokazu TAJIMA

Person

Patents Grantslast 30 patents

Charger with inverter and inverter gate drive circuit

Controller for AC electric motor

Charger

Drive control apparatus

Machine control device

Speed control device for electric motor

Method for controlling AC motor

Variable-speed controlling device for use with an induction motor

Speed sensorless vector control apparatus

Apparatus for calculating torque generated by induction motor

Speed control apparatus for induction motor

Variable speed controlling device for induction motor

Variable-speed control method and apparatus for AC motor

Variable speed controller for an AC motor

Variable speed controller for an induction motor

Control apparatus for AC motor

Method and apparatus for controlling an AC motor and detecting malf...

Variable speed control apparatus for induction motor

Patents Applicationslast 30 patents

CONTROLLER FOR AC ELECTRIC MOTOR

DRIVE CONTROL APPARATUS

CHARGER

CHARGER

MACHINE CONTROL DEVICE

SPEED CONTROL DEVICE FOR ELECTRIC MOTOR

Method for controlling AC motor

Speed sensorless vector control apparatus