YK

Yuzaburo Kumagai

MK Mitsui Sekiyu Kagaku Kogyo Kabushiki Kaisha: 1 patents #4 of 19Top 25%
Overall (All Time): #3,953,255 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4749494 Treatment of waste water by the activated sludge process Takaharu Tomoyasu, Shiro Honda, Hikoyoshi Kanayama 1988-06-07