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Yoji Ao
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Kitakyushu, JP
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last 30 patents
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Patent Grant
Method of preventing generation of earth circulating current in ind...
Patent number
5,437,434
Issue date
Aug 1, 1995
Nippon Steel Corporation
Yoji Ao
B22 - CASTING POWDER METALLURGY
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Patent Grant
Method of and apparatus for withdrawing strand in horizontal contin...
Patent number
5,293,925
Issue date
Mar 15, 1994
Kawasaki Jukogyo Kabushiki Kaisha
Hatsuyoshi Kumashiro
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...