Process for recovering oxygen from gaseous mixtures containing water or carbon dioxide which process employs ion transport membranes
CA 2104820 C · Owner: Thorogood, Robert Michael · Inventors: Labar, James Marlow Sr.; Dyer, Paul Nigel; Carolan, Michael Francis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a process for recovering oxygen from an oxygen-containing gaseous mixture containing one or more components selected from water carbon, dioxide or a volatile hydrocarbon which process utilizes ion transport membranescomprising a multicomponent metallic oxide containing strontium calcium or, magnesium. The process utilizes a temperature regime which overcomes problems associated with degradation of strontiumcalcium- and magnesium-containing, multicomponent oxides caused by carbon dioxide.
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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 August 25, 1993 and granted February 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 25, 2015.
- 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.