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last 30 patents
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Patent Grant
Method and apparatus for repairing a coke oven
Patent number
5,745,969
Issue date
May 5, 1998
Sumitomo Heavy Industries, Ltd.
Shigeru Yamada
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Patent Grant
Electromagnetic stirring method
Patent number
4,867,786
Issue date
Sep 19, 1989
Sumitomo Metal Industries, Ltd.
Mitsuru Saeki
B22 - CASTING POWDER METALLURGY