Grease composition, and rolling bearing

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United States of America Patent

PATENT NO 12037561
APP PUB NO 20230323240A1
SERIAL NO

18020743

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Abstract

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A grease composition including: a base oil; a thickener; a zinc sulfonate; a polysulfide; an overbased calcium sulfonate; and triphenyl phosphite, in which a proportion of the zinc sulfonate with respect to a total mass of the base oil and the thickener is 0.030 mass % to 0.045 mass % in terms of a zinc content, a proportion of the polysulfide with respect to the total mass of the base oil and the thickener is 0.16 mass % to 0.24 mass % in terms of a sulfur content, a proportion of the overbased calcium sulfonate with respect to the total mass of the base oil and the thickener is 0.010 mass % to 0.015 mass % in terms of a calcium content, and a proportion of the triphenyl phosphite with respect to the total mass of the base oil and the thickener is 0.24 mass % to 0.36 mass %.

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Patent Owner(s)

Patent OwnerAddress
JTEKT CORPORATION1-1 ASAHI-MACHI KARIYA-SHI AICHI-KEN 448-8652
ENEOS CORPORATION1-2 OTEMACHI 1-CHOME CHIYODA-KU TOKYO 100-8162

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ayame, Yusuke Tokyo, JP 8 19
Hagino, Yurie Kashihara, JP 6 1
Sakai, Kazumi Tokyo, JP 26 295
Sakamoto, Kiyomi Tokyo, JP 66 1410
Tatsumi, Go Tokyo, JP 8 32
Tsuda, Takeshi Kashiba, JP 62 372

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