Michihiro Aizawa

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Matsudo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Oil impregnated porous bearing units and motors provided with same
- Patent number 5,834,870
- Issue date Nov 10, 1998
- Hitachi, Ltd.
- Hidekazu Tokushima
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Magnetic fluid bearing unit structure and motor having the same
- Patent number 5,821,655
- Issue date Oct 13, 1998
- Hitachi, Ltd.
- Hidekazu Tokushima
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Bearing unit
- Patent number 5,645,355
- Issue date Jul 8, 1997
- Hitachi, Ltd.
- Hidekazu Tokushima
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...