Hirofumi Sakai

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Nagaokakyo-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
PWM controlled motor drive
- Patent number 6,969,963
- Issue date Nov 29, 2005
- Matsushita Electric Industrial Co., Ltd.
- Hirofumi Sakai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Motor drive method and motor driver
- Patent number 6,873,126
- Issue date Mar 29, 2005
- Matsushita Electric Industrial Co., Ltd.
- Masashi Inao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Motor driver and motor drive method
- Patent number 6,674,258
- Issue date Jan 6, 2004
- Matsushita Electric Industrial Co., Ltd.
- Hirofumi Sakai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Motor driver
- Publication number 20040245948
- Publication date Dec 9, 2004
- MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- Hirofumi Sakai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Motor drive method and motor driver
- Publication number 20040000884
- Publication date Jan 1, 2004
- MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- Masashi Inao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Motor driver and motor drive method
- Publication number 20020195981
- Publication date Dec 26, 2002
- Matsushita Electric Industrial Co., Ltd.
- Hirofumi Sakai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER