Two-phase downflow liquid distribution device
CA 2224696 C · Owner: Jensen, Benny Normann · Inventors: Gamborg, Morten Muller; Jensen, Benny Normann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improvement is provided in a liquid-vapour distribution device for use in two- phase concurrent downflow vessels. The improvement includes a level horizontal tray which is fabricated and installed so as to be essentially-leak-free at the junctions of the tray and the vessel wall. The horizontal tray includes perforations of equal size the perforations being distributed in an optimized pattern over the surface of the horizontal tray. Each perforation through the horizontal tray is fitted with a vapour lift tube. The vapour lift tube includes an upflow tube portion and a downflow tube portion. The upflow tube portion is configured to fit against the downflow tube portion so as to limit an …
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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 December 12, 1997 and granted April 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2019.
- 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.