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:
Oct. 13, 2015
Filed:
May. 21, 2007
Kazuhiro Yagishita, Yokohama, JP;
Tetsuo Okawa, Yokohama, JP;
Kazuhiro Yagishita, Yokohama, JP;
Tetsuo Okawa, Yokohama, JP;
NIPPON OIL CORPORATION, Tokyo, JP;
Abstract
A lubricating oil composition is provided which is excellent in oxidation stability, base number retention properties, anti-wear properties, extreme pressure properties and anti-corrosion properties and is a low phosphorus and low sulfur lubricating oil composition particularly suitable for internal combustion engines. The composition comprises a lubricating base oil, (A) at least one type selected from the group consisting of metal salts of sulfur-free phosphorus-containing acidic organic compounds, (B) at least one type selected from the group consisting of phosphorus-containing carboxylic acid compounds and metal salts thereof, and (C) at least one type selected from the group consisting of anti-oxidants.