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:
Sep. 21, 1999
Filed:
Sep. 17, 1997
Applicant:
Inventors:
Youdong Tong, Houston, TX (US);
Michael K Poindexter, Sugar Land, TX (US);
Assignee:
Nalco/Exxon Energy Chemicals, L.P., Sugar Land, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ;
U.S. Cl.
CPC ...
208 / ; 208 / ; 208132 ; 585648 ; 585650 ;
Abstract
A method is disclosed for reducing coke deposition in a pyrolysis furnace which comprises treating the pyrolysis furnace with a combination of sulfur- and phosphorus-containing compounds having a total sulfur to phosphorus atomic ratio of at least 5.