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:
Jun. 26, 1990
Filed:
Jul. 29, 1988
Applicant:
Inventor:
Thomas H Johnson, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10L / ;
U.S. Cl.
CPC ...
44 71 ; 44 70 ;
Abstract
Certain poly(olefin)-N-substituted carbamates are useful to prevent or reduce engine deposits alone or in combination with certain poly(olefin) polymers or hydrogenated forms of the polymers. A motor fuel composition and method of operating an internal combustion engine using said poly(olefin)-N-substituted carbamates are claimed.