YH

Yushiro Hirai

NC Nippon Mining & Metals Co.: 1 patents #80 of 166Top 50%
Overall (All Time): #3,554,564 of 4,157,543Top 90%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6436169 Method of operating a copper smelting furnace Mitsumasa Hoshi 2002-08-20