Removing solids, haloic acid, cos and h2s from a feed gas
CA 2036062 C · Owner: Bowman, David Frederick · Inventors: Bowman, David Frederick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for removing solids, haloic acid(s) COS and, H2S from a feed gas comprising the steps of (a) contacting the feed gas (1) with water (8) to obtain mixture of feed gas and water;, (b) contacting the mixture of feed gas and water with an aqueous solution (11) of K2CO3;, (c) supplying the mixture obtained in step (b) to a gas/liquid separator (14) and removing from it a bottom stream (20) and a gaseous overhead stream;, (d) contacting (21) the gaseous overhead stream with an aqueous solution of K2CO3 to convert COS and to remove an H2S and water containing gaseous overhead stream; (e) removing water or water and H2S from the H2S and water containing gaseous overhead stream from step …
Read the whole patent
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 February 11, 1991 and granted March 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2013.
- 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.