HK

Hiroichi Kouyama

SC Sumikin Chemical Co.: 1 patents #11 of 30Top 40%
Overall (All Time): #3,677,034 of 4,157,543Top 90%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5721332 Phenolic resin Haruyuki Kano, Yoshihisa Sone, Kouichi Yoshimura 1998-02-24