Regulation of a psa process
CA 2243862 A1 · Owner: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Proced Es Georges Claude · Inventors: Rouge, Dominique; Monereau, Christian; Montfort, Christophe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a PSA process for separation of a gas stream containing essentially oxygen and nitrogen by preferential adsorption of the nitrogen at a high adsorption pressure, on at least one adsorbent bed inserted in at least one separation zone the said adsorbent preferentially nitrogen each adsorbent bed being exposed to successive separation cycles each separation cycle comprising at least: one purge phase comprising desorption of the nitrogen adsorbed on the adsorbent at a low desorption pressure lower than the said high adsorption pressure a feed phase comprising introduction of the gas stream at feed temperature (Talim) into the separation zone with passage from the low …
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 July 21, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 21, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 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.