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Masazumi Hirai
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Kimitsu, JP
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last 30 patents
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Patent Grant
Process for the production of semi-solidified metal composition
Patent number
5,144,998
Issue date
Sep 8, 1992
Rheo-Technology Ltd.
Masazumi Hirai
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process and apparatus for the production of semi-solidified metal c...
Patent number
5,110,547
Issue date
May 5, 1992
Rheo-Technology, Ltd.
Manabu Kiuchi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Continuous casting method
Patent number
4,687,047
Issue date
Aug 18, 1987
Nippon Steel Corporation
Shigeaki Ogibayashi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Steel materials for welded structures
Patent number
4,629,504
Issue date
Dec 16, 1986
Nippon Steel Corporation
Makoto Koike
C21 - METALLURGY OF IRON
Information
Patent Grant
Converter steelmaking process
Patent number
4,334,921
Issue date
Jun 15, 1982
Nippon Steel Corporation
Masazumi Hirai
C21 - METALLURGY OF IRON