Seiya Kitagawa

Person

Kawasaki-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
DC to DC converter producing output voltage exhibit rise and fall c...
- Patent number 7,129,682
- Issue date Oct 31, 2006
- Fujitsu Limited
- Mitsuo Saeki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC to DC converter producing output voltage exhibiting rise and fal...
- Patent number 6,911,806
- Issue date Jun 28, 2005
- Fujitsu Limited
- Mitsuo Saeki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply apparatus with chargeable battery and charge/discharge...
- Patent number 6,707,271
- Issue date Mar 16, 2004
- Fujitsu Limited
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC to DC converter producing output voltage exhibiting rise and fal...
- Patent number 6,664,772
- Issue date Dec 16, 2003
- Fujitsu Limited
- Mitsuo Saeki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply apparatus with chargeable battery and charge/discharge...
- Patent number 6,624,613
- Issue date Sep 23, 2003
- Fujitsu Limited
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Battery charge control circuit, battery charging device, and batter...
- Patent number 6,452,364
- Issue date Sep 17, 2002
- Fujitsu Limited
- Mitsuo Saeki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply apparatus with chargeable battery and charge/discharge...
- Patent number 6,445,164
- Issue date Sep 3, 2002
- Fujitsu Limited
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC-to-DC converter circuit having a power saving mode
- Patent number 6,420,858
- Issue date Jul 16, 2002
- Fujitsu Limited
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power unit
- Patent number 6,414,403
- Issue date Jul 2, 2002
- Fujitsu Limited
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply apparatus with chargeable battery and charge/discharge...
- Patent number 6,204,633
- Issue date Mar 20, 2001
- Fujitsu Limited
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Controller for DC-DC converter
- Patent number 6,194,875
- Issue date Feb 27, 2001
- Fujitsu Limited
- Kyuichi Takimoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC-DC converter circuit
- Patent number 6,169,392
- Issue date Jan 2, 2001
- Fujitsu Limited
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC to DC converter producing output voltage exhibiting rise and fal...
- Patent number 6,147,477
- Issue date Nov 14, 2000
- Fujitsu Limited
- Mitsuo Saeki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control circuit of a synchronous rectification type DC-DC converter
- Patent number 6,091,234
- Issue date Jul 18, 2000
- Fujitsu Limited
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC-DC converter control circuit
- Patent number 5,966,003
- Issue date Oct 12, 1999
- Fujitsu Limited
- Kyuichi Takimoto
- G05 - CONTROLLING REGULATING
Information Patent Grant
Power supply unit with simplified circuitry
- Patent number 5,898,234
- Issue date Apr 27, 1999
- Fujitsu Limited
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Step-up/down DC-to-DC converter
- Patent number 5,831,418
- Issue date Nov 3, 1998
- Fujitsu Ltd.
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
DC to DC converter producing output voltage exhibit rise and fall c...
- Publication number 20050264270
- Publication date Dec 1, 2005
- FIJITSU LIMITED
- Mitsuo Saeki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DC to DC converter producing output voltage exhibit rise and fall c...
- Publication number 20040135559
- Publication date Jul 15, 2004
- FUJITSU LIMITED
- Mitsuo Saeki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DC to DC converter producing output voltage exhibiting rise and fal...
- Publication number 20030107355
- Publication date Jun 12, 2003
- Fujitsu LimitedFujitsu Limited
- Mitsuo Saeki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Power supply apparatus with chargeable battery and charge/discharge...
- Publication number 20020171399
- Publication date Nov 21, 2002
- FUJITSU, LIMITED
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Power supply apparatus with chargeable battery and charge/discharge...
- Publication number 20020057073
- Publication date May 16, 2002
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER UNIT
- Publication number 20010020802
- Publication date Sep 13, 2001
- SEIYA KITAGAWA
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Power supply apparatus with chargeable battery and charge/discharge...
- Publication number 20010007417
- Publication date Jul 12, 2001
- Seiya Kitagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Seiya Kitagawa

Person

Patents Grantslast 30 patents

DC to DC converter producing output voltage exhibit rise and fall c...

DC to DC converter producing output voltage exhibiting rise and fal...

Power supply apparatus with chargeable battery and charge/discharge...

DC to DC converter producing output voltage exhibiting rise and fal...

Power supply apparatus with chargeable battery and charge/discharge...

Battery charge control circuit, battery charging device, and batter...

Power supply apparatus with chargeable battery and charge/discharge...

DC-to-DC converter circuit having a power saving mode

Power unit

Power supply apparatus with chargeable battery and charge/discharge...

Controller for DC-DC converter

DC-DC converter circuit

DC to DC converter producing output voltage exhibiting rise and fal...

Control circuit of a synchronous rectification type DC-DC converter

DC-DC converter control circuit

Power supply unit with simplified circuitry

Step-up/down DC-to-DC converter

Patents Applicationslast 30 patents

DC to DC converter producing output voltage exhibit rise and fall c...

DC to DC converter producing output voltage exhibit rise and fall c...

DC to DC converter producing output voltage exhibiting rise and fal...

Power supply apparatus with chargeable battery and charge/discharge...

Power supply apparatus with chargeable battery and charge/discharge...

POWER UNIT

Power supply apparatus with chargeable battery and charge/discharge...