Fluidised bed discharge device
CA 1283524 C · Owner: Bp Chemicals Limited · Inventors: Raufast, Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for discharging solid particulate products present in a fluidised bed reactor (1) in which the polymerisation or co-polymerisation of alpha-olefins is carried out consisting of a, vessel (4) connected to the reactor (1) by means of a pipe (2) provided with a valve (3) and connected to a reservoir situated downstream (not shown) by means of a pipe (6) provided with a valve (5), the said apparatus being characterised in that: - the two valves (3) and (5) consist of continuously rotating plug valves, these valves being moved in such a way that the two valves are not open at the same time even partly, and, - the volume of the vessel (4) comprises between 1/10 and 1/1000 and preferably …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.