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. 06, 2006
Filed:
Apr. 29, 2003
Haiyong Cai, Calgary, CA;
Michael C. Oballa, Cochrane, CA;
Andrzej Krzywicki, Calgary, CA;
Leslie Wilfred Benum, Red Deer, CA;
Haiyong Cai, Calgary, CA;
Michael C. Oballa, Cochrane, CA;
Andrzej Krzywicki, Calgary, CA;
Leslie Wilfred Benum, Red Deer, CA;
NOVA Chemicals (International) S.A., Fribourg, CH;
Abstract
The present invention provides a process to treat steels, preferably carbon steel to reduce the tendency of the steel to form coke when in contact with hydrocarbons at elevated temperatures. The steel may be first reduced then treated with a mixture of compounds which further modify the reduced surface and finally the treated steel surface is cured. The treated steel has a reduced propensity to form coke when in contact with hydrocarbons particularly at higher temperatures.