Adsorption process for oxygen removal using a multi-layered adsorbent bed
CA 2131072 A1 · Owner: Wang, Andrew Wilson · Inventors: Kumar, Ravi; Wang, Andrew Wilson; Golden, Timothy Christopher
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is set forth for removing oxygen from an oxygen-containing feed stream comprising passing the oxygen-containing stream through a multi-layered adsorption bed comprising a kinetic based oxygen-selective adsorbent at the feed end of the bed and an equilibrium based oxygenselective adsorbent at the product end of the bed wherein regeneration of the bed includes a "hybrid repressurization" scheme which involves simultaneously repressurizing the bed with a portion of both the product stream and the feed stream.
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 August 29, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 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.