Method for purifying a gas stream
CA 2337840 A1 · Owner: Borer, Camille · Inventors: Naef, Urs Georg; Borer, Camille; Ferreira, Claudemiro
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 method for purifying a gas stream containing impurities composed of organic compounds said gas stream flowing out of a , reactor (1) designed for solid phase condensation preferably for aromatic , polyesters and polyamides. According to said method a gas containing at least , oxygen is fed to the gas stream containing the impurities. The combined gas stream is then conveyed, at a high temperature especially from 280 ~C to 380 , ~C, onto a catalyst (8) containing rhodium or a rhodium alloy on an inert porous support. It was found advantageous that the amount of oxygen used be hypo stoichiometric, in relation to the organic impurities and/or that the , ratio of …
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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 July 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2021.
- 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.