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:
Feb. 11, 2003
Filed:
Jun. 02, 1997
Applicant:
Inventors:
Allen I. Feinstein, Wheaton, IL (US);
Ruth Ann Doyle, Naperville, IL (US);
Calvin T. Chew, Warrenville, IL (US);
Assignee:
BP Corporation North America Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 5/22 ;
U.S. Cl.
CPC ...
C07C 5/22 ;
Abstract
A catalyst system suitable for the isomerization of a xylene and conversion of ethylbenzene in a feed containing xylene and ethylbenzene comprising a first catalyst having activity for the conversion of ethylbenzene, a second catalyst having hydrogenation activity and a third catalyst having activity for the isomerization of a xylene where the second catalyst is located in the system between the first and third catalysts relative to a flow of feed material through the catalyst system.