LUBRICANT OIL COMPOSITION

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United States of America Patent

APP PUB NO 20160369201A1
SERIAL NO

15122220

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided is a lubricating oil composition favorable for reducing friction in a sliding mechanism equipped with a piston ring and a liner, in a device having the sliding mechanism. The lubricating oil composition contains a lubricant base oil, (1) a polymethacrylate and/or an olefin copolymer having a mass-average molecular weight of 100,000 to 600,000, and (2) an ester-type ashless friction modifier and/or an amine-type ashless friction modifier, and has a shear viscosity at 150° C. of 2.3 mPa· or more and less than 3.7 mPa·s.

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Patent Owner(s)

Patent OwnerAddress
IDEMITSU KOSAN CO LTDTOKYO TOKYO METROPOLIS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
KASAI, Moritsugu Chiba-shi, JP 19 70
TAMURA, Kazushi Kawasaki-shi, JP 14 68

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