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:
Jul. 18, 1995
Filed:
Mar. 31, 1994
Applicant:
Inventors:
Vispi R Sagar, League City, TX (US);
Scott K Jackson, Baytown, TX (US);
Assignee:
Exxon Chemical Patents Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; B01J / ; B65G / ;
U.S. Cl.
CPC ...
422131 ; 422213 ; 422219 ; 406125 ;
Abstract
A catalyst feed system is described for intermittent delivery of supported and/or prepolymerized supported catalyst to a polymerization reactor. The system incorporates valves with cylindrical sealing surfaces as well as a venting stage incorporating a filter arranged such that it is self-cleaning.