Akihisa Okada

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetically coupled pump and nuclear reactor incorporating said pump
- Patent number 5,017,102
- Issue date May 21, 1991
- Hitachi, Ltd.
- Takashi Shimaguchi
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Multi-stage diffuse-type centrifugal pump
- Patent number 4,909,705
- Issue date Mar 20, 1990
- Hitachi, Ltd.
- Hiroyuki Katsura
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...