RY

Ryou Yamada

IC Idemitsu Kosan Co.: 2 patents #509 of 1,237Top 45%
Overall (All Time): #2,042,870 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8637438 Lubricant composition for internal combustion engine — 2014-01-28
5807813 Lubricating oil composition — 1998-09-15