TA

Tsutomu Akita

IC Idemitsu Kosan Co.: 1 patents #699 of 1,237Top 60%
Overall (All Time): #3,840,713 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5273672 Lubricating oil composition containing a partial ester of a polyhydric alcohol and a substituted succinic acid ester Masashi Dasai, Masaharu Sasaki 1993-12-28