Yoshihiko Harafuji

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Power source system comprising a plurality of power sources having...
- Patent number 4,728,807
- Issue date Mar 1, 1988
- NEC Corporation
- Yoshihiko Harafuji
- G05 - CONTROLLING REGULATING
Information Patent Grant
Electric power supply circuit capable of reducing a loss of electri...
- Patent number 4,644,458
- Issue date Feb 17, 1987
- NEC Corporation
- Yoshihiko Harafuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE