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Yoshiro Matsumoto
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Nishinomiya, JP
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last 30 patents
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Patent Grant
Hearth roller with suppressed heat crown
Patent number
5,547,450
Issue date
Aug 20, 1996
Sumitomo Metal Industries, Ltd.
Yoshiro Matsumoto
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Variable-crown roll
Patent number
4,860,416
Issue date
Aug 29, 1989
Sumitomo Metal Industries
Takeshi Masui
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Heavy thick high-strength casting having improved weldability and i...
Patent number
4,344,801
Issue date
Aug 17, 1982
Sumitomo Metal Industries, Ltd.
Tatsuro Kunitake
C21 - METALLURGY OF IRON