Masao Kawakami

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Hitachinaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
High strength heat resisting cast steel, steam turbine casing, stea...
- Patent number 5,961,284
- Issue date Oct 5, 1999
- Hitachi, Ltd.
- Mitsuo Kuriyama
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Stainless steel type 13Cr5Ni having high toughness, and usage of th...
- Patent number 5,879,132
- Issue date Mar 9, 1999
- Hitachi, Ltd.
- Kenichi Usami
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Stainless steel type 13Cr5Ni having high toughness, and usage the same
- Patent number 5,601,411
- Issue date Feb 11, 1997
- Hitachi, Ltd.
- Kenichi Usami
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR