System for removing carbon monoxide and method for removing carbon monoxide
CA 2362470 A1 · Owner: Echigo, Mitsuaki · Inventors: Suzuki, Minoru; Echigo, Mitsuaki; Okada, Osamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for removing carbon monoxide which is contained in an amount of 1,000 ppm to a few percentages in a gas to be treated being rich in hydrogen such , as the reformed gas obtained by reforming a fuel such as natural gas or methanol, which method, using a system comprising two CO-removing units comprises a first step removing carbon monoxide by methanation in the presence of a catalyst in a first CO-remover and a second step removing residual carbon monoxide by a catalytic oxidation reaction with the use of an oxidizing agent in a second CO-remover. This method allows removing carbon monoxide very effectively, for example, to a level of tens of ppm or less (in some cases 10 , …
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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 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 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.