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:
Apr. 22, 2014
Filed:
Oct. 01, 2009
Applicant:
Kazuo Tagawa, Tokyo, JP;
Inventor:
Kazuo Tagawa, Tokyo, JP;
Assignee:
JX Nippon Oil & Energy Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10G 71/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The hydrocarbon-based lubricating base oil of the invention has a urea adduct value of not greater than 4% by mass, a viscosity index of 100 or greater, and a cycloparaffin content of 30-60% by mass based on the total amount of the saturated components, as measured by field desorption/ionization mass spectrometry. The hydrocarbon-based lubricating base oil of the invention allows high levels of both viscosity-temperature characteristic and low-temperature viscosity characteristic to be obtained, and exhibits excellence in terms of evaporation property and energy efficiency.