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:
Jan. 20, 2009
Filed:
Mar. 21, 2005
Applicant:
Warren S. Letzsch, Ellicott City, MD (US);
Inventor:
Warren S. Letzsch, Ellicott City, MD (US);
Assignee:
Stone & Webster Process Technology, Inc., Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
C10G 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a catalytic cracking reactor system and process in which a riser reactor is configured to have two sections of different radii in order to produced improved selectivity to propene and butenes as products.