Akihiro Nakajima

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Yokohama, Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for removing torque ripples in direct-current motors
- Patent number 4,645,991
- Issue date Feb 24, 1987
- Itsuki Ban
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Semiconductor electric motor having a rotary transformer to excite...
- Patent number 4,612,486
- Issue date Sep 16, 1986
- Itsuki Ban
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Apparatus for removing torque ripples in a direct current motor
- Patent number 4,546,294
- Issue date Oct 8, 1985
- Itsuki Ban
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER