The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2015
Filed:
Sep. 28, 2009
Satoshi Ikeda, Chiba, JP;
Nozomi Kamiya, Ichihara, JP;
Hiroshi Hoya, Amaryllis Ville, SG;
Jumpei Tanaka, Hatsukaichi, JP;
Chor Huang, Avon, OH (US);
Satoshi Ikeda, Chiba, JP;
Nozomi Kamiya, Ichihara, JP;
Hiroshi Hoya, Amaryllis Ville, SG;
Jumpei Tanaka, Hatsukaichi, JP;
Chor Huang, Avon, OH (US);
MITSUI CHEMICALS, INC., Tokyo, JP;
THE LUBRIZOL CORPORATION, Wickliffe, OH (US);
Abstract
It is an object to provide a lubricating oil composition having low-temperature properties and fuel efficiency at high temperatures which are superior to those of conventional lubricating oil compositions, and to provide a viscosity modifier for lubricating oils and an additive composition for lubricating oils which are used for obtaining said composition. The viscosity modifier for lubricating oils of the present invention comprises a propylene copolymer (A) which has a density of 875 kg/m3 or less and which comprises 60 mole % or more of structural unit derived from propylene.