Ultrasonic catalyst feed for fluid bed olefin polymerization
CA 2310658 A1 · Owner: Williams, Clark Curtis · Inventors: Williams, Clark Curtis; Ramamurthy, Arakalgud Venkatapathia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Liquid catalyst composition is fed to a fluidized bed olefin polymerization reactor through an ultrasonic nozzle enabling, improved control over average catalyst composition droplet size and size distribution, which provides better control over resin particle size. The spray may be surrounded by a shroud of gas which creates a particle lean zone, thus reducing the likelihood of contact by the catalyst composition with existing product particles already suspended in the fluid bed.
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
- Filed June 2, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2022.
- 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.