Mitso Kuriyama

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Steel rotor shafts of electric machines
- Patent number 5,548,174
- Issue date Aug 20, 1996
- Hitachi, Ltd.
- Masao Siga
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Steel rotor shafts for electric machines
- Patent number 5,437,742
- Issue date Aug 1, 1995
- Hitachi, Ltd.
- Masao Siga
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Steel for rotor shafts of electric machines and method and product...
- Patent number 5,288,455
- Issue date Feb 22, 1994
- Hitachi, Ltd.
- Masao Siga
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...