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SI Sumitomo Heavy Industries: 1 patents #424 of 917Top 50%
Overall (All Time): #3,272,883 of 4,157,543Top 80%
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Patent #TitleCo-InventorsDate
8075665 Reduction treatment apparatus and method of reduction treatment Nobuo Ehara, Shigeki Kashio, Yuzuru Satou 2011-12-13