Tadahisa Yamamoto

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Kanagawa, JP

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Patents Grantslast 30 patents

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
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
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
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
Video telephone
- Patent number 5,136,628
- Issue date Aug 4, 1992
- Nippon Telegraph & Telephone Corporation
- Shoji Araki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

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
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
Battery pack and signal transmission system
- Publication number 20020005709
- Publication date Jan 17, 2002
- Tamiji Nagai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER