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. 22, 1980
Filed:
Dec. 13, 1978
Applicant:
Inventor:
Gary M Masada, Corte Madera, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208 19 ; 208 18 ; 208311 ;
Abstract
A lube oil blend process and composition are provided. In the process a raffinate lube oil stock having a superior sunlight stability is produced by contacting a gas oil with a suitable solvent under solvent-extracting conditions. The blend is produced by admixing raffinate and raw hydrocrackate lube oil stock. The blend contains, in parts by volume, for each 100 parts of the raffinate an amount of the hydrocrackate stock in the range from about 10 to 45 parts. The resulting blend exhibits a sunlight stability at least equivalent to that of the raffinate stock.