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:
Nov. 02, 1982
Filed:
Apr. 13, 1981
Applicant:
Inventor:
Leonard B Graiff, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L / ;
U.S. Cl.
CPC ...
44 62 ; 44 72 ; 44 55 ; 44 77 ; 44 71 ;
Abstract
The control or reversal of octane requirement increase phenomenon together with improved fuel economy in a spark ignition internal combustion engine is achieved by introducing with the combustion charge a fuel composition containing an octane requirement increase-inhibiting amount of (a) certain oil soluble aliphatic polyamines and (b) certain low molecular weight polymers and/or copolymers of monoolefins having up to 6 carbon atoms, in certain ratio.