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:
Dec. 17, 1996
Filed:
Mar. 21, 1995
Applicant:
Inventors:
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
508466 ; 508472 ;
Abstract
This invention provides hydrocarbon oil compositions comprising a major amount of a hydrocarbon oil and, as active ingredients, minor amounts of a copolymer of at least one n-(C.sub.8 -C.sub.40 -alkyl) (meth)acrylate with maleic anhydride, and at least one additive selected from the group consisting of a homopolymer or copolymer derived from an unsaturated hydrocarbon monomer, an ester and a wax anti-settling additive; additive concentrates containing the active ingredients and use of the latter in improving the cold flow properties of hydrocarbon oils.