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:
Dec. 15, 1992
Filed:
May. 14, 1991
Applicant:
Inventor:
Charles Raufast, Saint Julien les Martigues, FR;
Assignee:
BP Chemicals Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F27B / ;
U.S. Cl.
CPC ...
422145 ; 414217 ; 414221 ; 414287 ; 414292 ; 414786 ; 526 88 ; 422233 ;
Abstract
Process for discharging solid particulate products present in a fluidized bed reactor in which the polymerization or copolymerization of alpha-olefins is carried out, in a system consisting of a vessel connected to the reactor by way of a pipe provided with a first valve and connected to a reservoir situated downstream by way of a pipe provided with a second valve, the said method being characterized in that: