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:
Jul. 19, 2016
Filed:
Sep. 17, 2014
Thomas George Murray, Dallas, TX (US);
Thomas George Murray, Dallas, TX (US);
Other;
Abstract
A method wherein either crude oil or a used oil lubricant is processed to produce an intermediate lube distillate which is then hydrotreated to produce a hydrotreated base oil which is then processed by solvent treatment to produce a higher viscosity index base oil (such as Groups II+ and/or III) and a lower viscosity index base oil (such as Groups I and/or II), in each case as compared with the viscosity index of the hydrotreated base oil. In the solvent treatment, one or more solvents are utilized to selectively separate higher viscosity index components from lower viscosity index components found in the hydrotreated base oil, and after the separations have occurred, the solvent is preferably recovered for re-use in the process.