Orderly packing for a column
CA 2116154 C · Owner: Sulzer Chemtech Ag · Inventors: Suess, Philipp
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The orderly packing for a column for mass transfer between a trickling film (14) and a gas exhibits alternately arranged layers (10, 20). Some of the layers (10) steer the trickling film towards one vertical edge (13) of the layers whilst the other layers (20) steer the trickling film away from the edge. In accordance with the invention the layers are coupled in pairs through redirector elements (3) these, redirector elements forming a liquid-conducting bridgingover: edge-seeking liquid (15) on the one layer (10) may be transferred at least partially to the associated neighbouring layer (20). (Figure 1, Figure 2)
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 February 22, 1994 and granted September 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 2016.
- 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.