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:
Mar. 12, 2013
Filed:
Mar. 28, 2007
Takashi Sano, Yokohama, JP;
Shinichi Shirahama, Yokohama, JP;
Kazuo Tagawa, Yokohama, JP;
Kenichi Komiya, Yokohama, JP;
Shigeki Matsui, Yokohama, JP;
Osamu Kurosawa, Yokohama, JP;
Takashi Sano, Yokohama, JP;
Shinichi Shirahama, Yokohama, JP;
Kazuo Tagawa, Yokohama, JP;
Kenichi Komiya, Yokohama, JP;
Shigeki Matsui, Yokohama, JP;
Osamu Kurosawa, Yokohama, JP;
Nippon Oil Corporation, Tokyo, JP;
Petroleum Energy Center, Tokyo, JP;
Abstract
The present invention provides a lubricating base oil comprising saturated components of 90% by mass or greater, wherein the proportion of cyclic saturated components among the saturated components is not greater than 40% by mass, and by having a viscosity index of 110 or higher and an iodine value of not greater than 2.5. The lubricating base oil of the invention exhibits excellent viscosity-temperature characteristics and heat and oxidation stability while also allowing additives to exhibit a higher level of function when additives are included. The lubricating base oil of the invention is suitable for use in various lubricating oil fields, and is especially useful for reducing energy loss and achieving energy savings in devices in which the lubricating base oil is applied.