Process for the separation of a gas from a gas mixture using metal complexes of cyclic polynitrogenated derivatives
CA 2029455 A1 · Owner: Lagrange, Gilles · Inventors: Lagrange, Gilles; Draskovic, Francois; Cocolios, Panayotis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a process for the separation of a gas from a gas mixture by using polynitrogenated cyclic complexes of a metal in which the pH and potential conditions applied are especially advantageous to perform the separation with an optimum yield. This invention also relates to the application of this process for the separation of a pure gas starting from a mixture of gases, or for the purification of a gas or of a gas mixture.
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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 November 7, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2012.
- 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.