Inventor

DASAI MASASHI

JP4 patents

Patents

4 patents

US5064546ANov 12, 1991

Lubricating oil composition

IDEMITSU KOSAN CO98 citations92

US5516440AMay 14, 1996

Lubricating oil composition

IDEMITSU KOSAN CO24 citations83

US5858932AJan 12, 1999

Internal combustion engine oil composition

IDEMITSU KOSAN CO18 citations81

US5273672ADec 28, 1993

Lubricating oil composition containing a partial ester of a polyhydric alcohol and a substituted succinic acid ester

IDEMITSU KOSAN CO20 citations75