SK

Sabro Koyama

IC Idemitsu Kosan Co.: 1 patents #13 of 46Top 30%
Overall (1997): #81,207 of 185,788Top 45%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

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