Process using cyanocobaltate complexes for removing oxygen from a fluid stream
CA 2062488 C · Owner: The Mid-America Commercialization Corporation ("Macc") · Inventors: Ramprasad, Dorai; Pearlstein, Ronald Martin; Pez, Guido Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for selectively separating oxygen from an oxygen-containing fluid stream by bringing said fluid stream into contact with a high capacity solid state cyanocobaltate complex in a non-aluminosilicate environment represented by the chemical formula: A~~zCo(CN~nX-~ pS, where: A is an alkali alkaline earth, transition, or, Group 12 metal atom; z is 1, 2 or 3;, n is any number from 3 to 5; x is n - 2;, p is any number from greater than zero to 6; and S is a ligand which is capable of coordinating with AZ+, Co or both. These complexes chemically bind oxygen to form novel oxygen adducts thereby selectively removing oxygen from the fluid stream. The bound oxygen may be recovered …
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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 March 9, 1992 and granted April 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 9, 2014.
- 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
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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.