Separation of a gas stream by a psa process
CA 2243052 A1 · Owner: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Proced Es Georges Claude · Inventors: Marot, Christine; Labasque, Jacques; Moreau, Serge
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention involves a process for separating a feed gas stream containing at least one initial constituent and one second constituent by: preferential adsorption of the said initial constituent at a high pressure of adsorption, on at least one bed of particles of an adsorbent material and recovery of a gas stream enriched in the said second constituent; and by desorption of the said initial component at a low pressure of desorption. The process is characterized by a ratio (µ/.sigma.) of between 1.5 and 15 between the average particle size (µ) of the adsorbent particles in the said bed and the particle size distribution range (.sigma.) of the said particles.
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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 July 6, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 6, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2020.
- 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.