SK

Sabro Koyama

IC Idemitsu Kosan Co.: 1 patents #699 of 1,237Top 60%
Overall (All Time): #3,709,428 of 4,157,543Top 90%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5599780 Metal working oil composition Tahei Okada, Yoshiaki Aiki 1997-02-04