System and method for separating a portion of a gas from a mixture of gases
CA 2028744 A1 · Owner: Brown, John Goodwin, Jr. · Inventors: Rice, Arthur William; Brown, John Goodwin, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for separating a portion of a first gas from a gaseous feed comprising a mixture of gases that is intermittently supplied to said system. The system comprises a membrane gas separator having at least one membrane through which the first gas permeates preferentially in comparison to other gases contained in the mixture. The separator is adapted to produce a nonpermeate gaseous product which is discharged from a nonpermeate gas side of the separator and in which the concentration of said first gas is lower than in said feed mixture. The system also includes a mechanism for supplying a gaseous purge stream to the separator when the feed mixture is not being supplied to the system. The …
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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 October 29, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 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.