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Sano Takashi, Komatsubara Hitoshi, Wada Hisayuki, Kurosawa Osamu, Itou Masaaki, Matsui Shigeki, Takahashi Masato, Fu Kai, Shirahama Shinichi, Sugiura Izuru, Taguchi Masahiro, Konishi Shozaburo: Lubricant base oil, lubricant composition for internal combustion engine and lubricant composition for driving force transmitting device. Nippon Oil, Petroleum Energy Ct Pec, October 17, 2007: EP1845151-A1 (20 worldwide citation)

The lubricating base oil of the invention is characterized by satisfying at least one of the following conditions (a) or (b). (a) A saturated compound content of 95 % by mass or greater, and a proportion of 0.1-10 % by mass of cyclic saturated compounds among the saturated compounds. (b) The conditi ...


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Matsui Shigeki, Komatsubara Hitoshi: Lubricant composition. Nippon Oil, December 20, 2007: JP2007-326963 (10 worldwide citation)

PROBLEM TO BE SOLVED: To provide a lubricant composition having excellent abrasion preventability, excellent fatigue preventability and excellent low temperature flowability, especially a lubricant composition suitable for automatic transmissions and/or continuously variable transmissions, and inter ...


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Komatsubara Hitoshi: Lubricant oil composition. Nippon Mitsubishi Oil, October 10, 2001: JP2001-279286 (3 worldwide citation)

PROBLEM TO BE SOLVED: To obtain a lubricant oil composition for transmission gears that has excellent increasing effect on both of dynamic and static friction coefficients, particularly of a wet clutch. SOLUTION: The objective lubricant composition is obtained characteristically by formulating (A)≥0 ...


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Komatsubara Hitoshi, Takahashi Masato, Matsui Shigeki: (Ja) 潤滑油組成物, (En) Lubricating oil composition. Nippon Oil Corporation, Komatsubara Hitoshi, Takahashi Masato, Matsui Shigeki, MORITA Nobuyuki, May 10, 2007: WO/2007/052833 (3 worldwide citation)

(EN) A lubricating oil composition as a lubricating oil suitable for use as automatic shift and/or stepless speed change device oil, exhibiting excellent torque transmission power and shift transmission performance, which lubricating oil composition comprises a lubricant base oil containing, based o ...


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Komatsubara Hitoshi, Matsui Shigeki: Lubricating oil composition. Nippon Oil, May 24, 2007: JP2007-126543 (3 worldwide citation)

PROBLEM TO BE SOLVED: To provide a lubricating oil composition having excellent torque transmissibility and variable speed characteristics, excellent in friction-preventing property of a wet type friction material, capable of keeping initial torque transmission force and variable characteristics for ...


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Komatsubara Hitoshi, Matsui Shigeki: Lubricant composition. Nippon Oil, November 25, 2004: JP2004-331721 (2 worldwide citation)

PROBLEM TO BE SOLVED: To provide a lubricant composition which can enhance the dynamic friction coefficients of wet clutches, has an excellent dynamic friction coefficient-maintaining property, and is especially suitable for automatic transmissions or stepless transmissions.SOLUTION: The dynamic fri ...


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Komatsubara Hitoshi, Matsui Shigeki, Yamane Tomonori, Yoshida Junpei: Lubricant composition. Nippon Oil, Honda Motor, January 13, 2005: JP2005-008695 (2 worldwide citation)

PROBLEM TO BE SOLVED: To provide a lubricant composition, especially a lubricant composition suitable for automatic transmission, which can simultaneously enhance the dynamic friction factor and static friction factor of a wet clutch.SOLUTION: This lubricant composition is characterized by containin ...


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Komatsubara Hitoshi: Boron containing lubricant oil composition. Nippon Mitsubishi Oil, November 21, 2001: GB2362389-A (1 worldwide citation)

A lubricant composition comprising a lubricant base oil blended with a boron-containing ashless dispersant (A) in an amount of 0.035 or more percent of boron by mass, and an alkaline earth metal sulfonate having a total base number of 50 to 500 mgKOH/g (B) in an amount of 0.01 or more percent of alk ...


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Sano Takashi, Komatsubara Hitoshi, Wada Toshiyuki, Kurosawa Osamu, Ito Masaro, Matsui Shigeki, Takahashi Masato, Tsukii Yoshi: Lubricant composition for driving and transmitting device. Nippon Oil, Petroleum Energy Center, September 21, 2006: JP2006-249408 (1 worldwide citation)

PROBLEM TO BE SOLVED: To provide a lubricant composition capable of attaining abrasion resistance, anti-seizing properties, and fatigue life at a high level for a long period, even when a viscosity thereof is decreased, and making it possible that low fuel-consuming properties of a driving and trans ...



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