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:
Dec. 28, 1993
Filed:
Sep. 17, 1991
Applicant:
Inventors:
Frederick T Clark, Wheaton, IL (US);
Muin S Haddad, Naperville, IL (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ;
U.S. Cl.
CPC ...
208 87 ; 208 18 ; 208111 ; 208143 ; 208 58 ; 208 96 ; 208 97 ;
Abstract
A method for reducing the pour point of a hydrocarbon feedstock that contains aromatic compounds, sulfur-containing compounds and nitrogen-containing compounds is provided. The method involves solvent extraction and utilizes a catalytic hydrodewaxing zone with a first section having a shape-selective molecular sieve-containing catalyst composition which is substantially free of Group VIII metals and a second section having a Group VIII metal-containing hydrogenation catalyst composition with a porous support material substantially free of acidic crystalline molecular sieve material.