YS

Yoshizi Saito

JC Japan Metals & Chemicals Co.: 1 patents #70 of 152Top 50%
Overall (All Time): #3,996,998 of 4,157,543Top 100%
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Patent #TitleCo-InventorsDate
4594169 Drilling fluid additives Masaru Nakamura, Toyoshi Iida, Tsugunori Honda 1986-06-10