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:
Aug. 02, 2011
Filed:
Feb. 01, 2007
John Stephen Godsmark, Grez Doiceau, BE;
Georges Marie Karel Mathys, Bierbeek, BE;
Hubertus Joseph Beckers, Keerbergen, BE;
Charles Morris Yarbrough, Baton Rouge, LA (US);
Stephen Harold Brown, Bernardsville, NJ (US);
Yeo-meng Lim, Singapore, SG;
John Stephen Godsmark, Grez Doiceau, BE;
Georges Marie Karel Mathys, Bierbeek, BE;
Hubertus Joseph Beckers, Keerbergen, BE;
Charles Morris Yarbrough, Baton Rouge, LA (US);
Stephen Harold Brown, Bernardsville, NJ (US);
Yeo-Meng Lim, Singapore, SG;
Exxonmobil Chemical Patents Inc., Houston, TX (US);
Abstract
Nitrogen-containing Lewis bases act as poisons for molecular sieve catalysts used in oligomerisation reactions. A lowering of their presence in the feed prior to the contacting thereof with the molecular sieve brings a significant extension of catalyst life. Excessive elimination of these poisons may be disadvantageous. Lowering the levels of these catalyst poisons to more manageable concentrations is therefore preferred.