Masakazu Takagi

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Switching power supply unit
- Patent number 6,888,728
- Issue date May 3, 2005
- TDK Corporation
- Masakazu Takagi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Rectifying circuit and switching power supply device having the same
- Patent number 6,687,143
- Issue date Feb 3, 2004
- TDK Corporation
- Junichi Yamamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multi-stage DC—DC converter
- Patent number 6,683,797
- Issue date Jan 27, 2004
- TDK Corporation
- Toshiyuki Zaitsu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply unit with series connected converter circuits
- Patent number 6,650,552
- Issue date Nov 18, 2003
- TDK Corporation
- Masakazu Takagi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power source
- Patent number 5,999,420
- Issue date Dec 7, 1999
- TDK Corporation
- Kenichi Aonuma
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Switching power supply unit
- Publication number 20040070994
- Publication date Apr 15, 2004
- TDK Corp.
- Masakazu Takagi
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Multi-stage DC-DC converter
- Publication number 20030137853
- Publication date Jul 24, 2003
- TDK Corporation
- Toshiyuki Zaitsu
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Rectifying circuit and switching power supply device having the same
- Publication number 20030039133
- Publication date Feb 27, 2003
- TDK Corporation
- Junichi Yamamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Switching power supply unit
- Publication number 20020191422
- Publication date Dec 19, 2002
- TDK Corporation
- Masakazu Takagi
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Semiconductor device
- Publication number 20020134999
- Publication date Sep 26, 2002
- TDK Corporation
- Masahiko Hirokawa
- H03 - BASIC ELECTRONIC CIRCUITRY