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:
Apr. 08, 2008
Filed:
Feb. 27, 2006
Shun C. Fung, Bridgewater, NJ (US);
Richard B. Hall, Whitehouse Station, NJ (US);
Hafedh Kochkar, Phillipsburg, NJ (US);
Karl G. Strohmaier, Port Murray, NJ (US);
Nicolas P. Coute, Houston, TX (US);
Kenneth R. Clem, Humble, TX (US);
Shun C. Fung, Bridgewater, NJ (US);
Richard B. Hall, Whitehouse Station, NJ (US);
Hafedh Kochkar, Phillipsburg, NJ (US);
Karl G. Strohmaier, Port Murray, NJ (US);
Nicolas P. Coute, Houston, TX (US);
Kenneth R. Clem, Humble, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
A method for maintaining the activity of silicoaluminophosphate (SAPO) molecular sieve catalyst particles during oxygenate to olefin conversion reactions. After regeneration of SAPO catalyst particles, the regenerated particles are mixed with particles having coke on their surface in a manner that maintains their catalytic activity at a predetermined level.