Takafumi Maeda

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Tokyo-to, JP

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Patents Grantslast 30 patents

Information Patent Grant
Power system protection system
- Patent number 7,579,712
- Issue date Aug 25, 2009
- The Tokyo Electric Power Company
- Ken Yanagihashi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Protective relay system provided with difference and addition filters
- Patent number 5,796,630
- Issue date Aug 18, 1998
- Kabushiki Kaisha Toshiba
- Takafumi Maeda
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and system of transformer protection and method and system o...
- Patent number 5,170,308
- Issue date Dec 8, 1992
- Hitachi, Ltd.
- Keizo Inagaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Static reactive-power compensation apparatus
- Patent number 4,546,303
- Issue date Oct 8, 1985
- Tokyo Electric Power Co., Inc.
- Takafumi Maeda
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
METAL OXIDE PARTICLES FOR BONDING, SINTERING BINDER INCLUDING SAME,...
- Publication number 20170278589
- Publication date Sep 28, 2017
- Hitachi, Ltd
- Yusuke YASUDA
- B82 - NANO-TECHNOLOGY
Information Patent Application
Power system protection system
- Publication number 20070198985
- Publication date Aug 23, 2007
- Ken Yanagihashi
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...