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. 28, 1994
Filed:
Jul. 20, 1992
Applicant:
Inventors:
John L Robbins, Stockton, NJ (US);
Robert S Lunt, North Plainfield, NJ (US);
Assignee:
Exxon Research and Engineering Company, Florham Park, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
134 39 ; 134 20 ; 134 2216 ; 134 2219 ;
Abstract
Accumulation of carbonaceous deposits on the combustion chamber surfaces of internal combustion engines is responsible for increased fuel octane requirement to prevent knock. Treatment of these carbonaceous deposits with weak bases, such as aqueous ethylenediamine, aids in their removal and thereby reduces the octane requirement of an internal combustion engine. The method is also applicable for removal of carbonaceous deposits from metal surfaces generally.