Tamiji Nagai

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Charge and discharge circuit of secondary battery and battery pack
- Patent number 8,610,405
- Issue date Dec 17, 2013
- Mitsumi Electric Co., Ltd.
- Kazuo Yamazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Bidirectional converter and electronic device
- Patent number 8,098,056
- Issue date Jan 17, 2012
- Mitsumi Electric Co., Ltd
- Kazuo Yamazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply device and method of starting the same
- Patent number 7,830,675
- Issue date Nov 9, 2010
- Mitsumi Electric Co., Ltd
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching circuit, switching method, protective device and battery...
- Patent number 7,436,644
- Issue date Oct 14, 2008
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Driving circuit for field effect transistor
- Patent number 7,202,633
- Issue date Apr 10, 2007
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Apparatus for connecting secondary battery cells in series and meth...
- Patent number 7,193,390
- Issue date Mar 20, 2007
- Sony Corporation
- Tamiji Nagai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Charging apparatus and charging method
- Patent number 7,023,179
- Issue date Apr 4, 2006
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charging apparatus and method for a secondary battery of a portably...
- Patent number 7,023,180
- Issue date Apr 4, 2006
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply using controlled negative feedback in series...
- Patent number 6,961,255
- Issue date Nov 1, 2005
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charging apparatus and charging method
- Patent number 6,956,357
- Issue date Oct 18, 2005
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply using controlled negative feedback in series...
- Patent number 6,956,754
- Issue date Oct 18, 2005
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charging apparatus and charging method
- Patent number 6,949,913
- Issue date Sep 27, 2005
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply using controlled negative feedback in series...
- Patent number 6,917,530
- Issue date Jul 12, 2005
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Battery pack and signal transmission system
- Patent number 6,650,090
- Issue date Nov 18, 2003
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Current detecting apparatus and its control method
- Patent number 6,552,562
- Issue date Apr 22, 2003
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power source unit
- Patent number 6,465,913
- Issue date Oct 15, 2002
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power source apparatus for providing a power source in a standby mo...
- Patent number 6,462,972
- Issue date Oct 8, 2002
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supplying apparatus and method having a primary side insulate...
- Patent number 6,452,820
- Issue date Sep 17, 2002
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply apparatus
- Patent number 6,373,724
- Issue date Apr 16, 2002
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method, apparatus and battery pack for charging and discharging sec...
- Patent number 6,326,768
- Issue date Dec 4, 2001
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Battery charger
- Patent number 6,291,965
- Issue date Sep 18, 2001
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supplying adapter, electronic equipment, and signal transmiss...
- Patent number 6,169,341
- Issue date Jan 2, 2001
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charging method, charging equipment, and integrated circuit
- Patent number 6,124,700
- Issue date Sep 26, 2000
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charging apparatus, secondary battery apparatus, charging system, a...
- Patent number 6,118,255
- Issue date Sep 12, 2000
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Secondary battery pack
- Patent number 6,066,939
- Issue date May 23, 2000
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Auxiliary power supply apparatus
- Patent number 6,057,609
- Issue date May 2, 2000
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charging control method and charging control device
- Patent number 6,028,415
- Issue date Feb 22, 2000
- Sony Corporation
- Tamiji Nagai
- G11 - INFORMATION STORAGE
Information Patent Grant
Equipment and method for transmitting electric power
- Patent number 5,991,170
- Issue date Nov 23, 1999
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charger system switchably connects a smoothing capacitor and resist...
- Patent number 5,982,153
- Issue date Nov 9, 1999
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Battery charger and battery charging method
- Patent number 5,982,151
- Issue date Nov 9, 1999
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
CHARGING POWER SOURCE APPARATUS
- Publication number 20110248670
- Publication date Oct 13, 2011
- Kazuo Yamazaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
BIDIRECTIONAL CONVERTER AND ELECTRONIC DEVICE
- Publication number 20100314945
- Publication date Dec 16, 2010
- MITSUMI ELECTRIC CO., LTD.
- Kazuo Yamazaki
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
ELECTRONIC SYSTEM, ELECTRONIC DEVICE AND POWER SUPPLY DEVICE
- Publication number 20100308778
- Publication date Dec 9, 2010
- Kazuo Yamazaki
- G05 - CONTROLLING REGULATING
Information Patent Application
Secondary battery charging circuit
- Publication number 20100188051
- Publication date Jul 29, 2010
- Mitsumi Electric Co. Ltd.
- Kazuo Yamazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING POWER SUPPLY DEVICE AND METHOD OF STARTING THE SAME
- Publication number 20100135048
- Publication date Jun 3, 2010
- Mitsumi Electric Company., Ltd.
- Tamiji Nagai
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
POWER SOURCE APPARATUS
- Publication number 20100127676
- Publication date May 27, 2010
- Mitsumi Electric Co. Ltd.
- Kazuo Yamazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CHARGING APPARATUS AND CHARGING METHOD
- Publication number 20050189924
- Publication date Sep 1, 2005
- Sony Corp
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Charging apparatus and charging method
- Publication number 20050189926
- Publication date Sep 1, 2005
- Sony Corp
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CHARGING APPARATUS AND CHARGING METHOD
- Publication number 20050189925
- Publication date Sep 1, 2005
- Sony Corp
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING POWER SUPPLY APPARATUS AND POWER CONTROL METHOD
- Publication number 20050180182
- Publication date Aug 18, 2005
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Switching circuit, switching method, protective device and battery...
- Publication number 20050174711
- Publication date Aug 11, 2005
- SONY CORPORATION
- Tamiji Nagai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SWITCHING POWER SUPPLY USING CONTROLLED NEGATIVE FEEDBACK IN SERIES...
- Publication number 20050169023
- Publication date Aug 4, 2005
- Sony Corporation
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Driving circuit for field effect transistor
- Publication number 20050116764
- Publication date Jun 2, 2005
- Tamiji Nagai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Switching power supply apparatus and power supply control method
- Publication number 20040156216
- Publication date Aug 12, 2004
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Apparatus for connecting secondary battery cells in series and meth...
- Publication number 20040018397
- Publication date Jan 29, 2004
- Tamiji Nagai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Charging apparatus and charging method
- Publication number 20040008007
- Publication date Jan 15, 2004
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Current detecting apparatus and its control method
- Publication number 20020011867
- Publication date Jan 31, 2002
- Sony Corporation
- Tamiji Nagai
- G01 - MEASURING TESTING
Information Patent Application
Power supplying apparatus and method
- Publication number 20020008979
- Publication date Jan 24, 2002
- Tamiji Nagai
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Battery pack and signal transmission system
- Publication number 20020005709
- Publication date Jan 17, 2002
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Power supply apparatus
- Publication number 20010043479
- Publication date Nov 22, 2001
- Tamiji Nagai
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Power source apparatus and pulse generating apparatus
- Publication number 20010012210
- Publication date Aug 9, 2001
- Tamiji Nagai
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Battery pack, power source apparatus, and charging and discharging...
- Publication number 20010005125
- Publication date Jun 28, 2001
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Tamiji Nagai

Person

Patents Grantslast 30 patents

Charge and discharge circuit of secondary battery and battery pack

Bidirectional converter and electronic device

Switching power supply device and method of starting the same

Switching circuit, switching method, protective device and battery...

Driving circuit for field effect transistor

Apparatus for connecting secondary battery cells in series and meth...

Charging apparatus and charging method

Charging apparatus and method for a secondary battery of a portably...

Switching power supply using controlled negative feedback in series...

Charging apparatus and charging method

Switching power supply using controlled negative feedback in series...

Charging apparatus and charging method

Switching power supply using controlled negative feedback in series...

Battery pack and signal transmission system

Current detecting apparatus and its control method

Power source unit

Power source apparatus for providing a power source in a standby mo...

Power supplying apparatus and method having a primary side insulate...

Power supply apparatus

Method, apparatus and battery pack for charging and discharging sec...

Battery charger

Power supplying adapter, electronic equipment, and signal transmiss...

Charging method, charging equipment, and integrated circuit

Charging apparatus, secondary battery apparatus, charging system, a...

Secondary battery pack

Auxiliary power supply apparatus

Charging control method and charging control device

Equipment and method for transmitting electric power

Charger system switchably connects a smoothing capacitor and resist...

Battery charger and battery charging method

Patents Applicationslast 30 patents

CHARGING POWER SOURCE APPARATUS

BIDIRECTIONAL CONVERTER AND ELECTRONIC DEVICE

ELECTRONIC SYSTEM, ELECTRONIC DEVICE AND POWER SUPPLY DEVICE

Secondary battery charging circuit

SWITCHING POWER SUPPLY DEVICE AND METHOD OF STARTING THE SAME

POWER SOURCE APPARATUS

CHARGING APPARATUS AND CHARGING METHOD

Charging apparatus and charging method

CHARGING APPARATUS AND CHARGING METHOD

SWITCHING POWER SUPPLY APPARATUS AND POWER CONTROL METHOD

Switching circuit, switching method, protective device and battery...

SWITCHING POWER SUPPLY USING CONTROLLED NEGATIVE FEEDBACK IN SERIES...

Driving circuit for field effect transistor

Switching power supply apparatus and power supply control method

Apparatus for connecting secondary battery cells in series and meth...

Charging apparatus and charging method

Current detecting apparatus and its control method

Power supplying apparatus and method

Battery pack and signal transmission system

Power supply apparatus

Power source apparatus and pulse generating apparatus

Battery pack, power source apparatus, and charging and discharging...