Device and process for dehydration of water absorbent
CA 2300870 A1 · Owner: Christensen, Tor · Inventors: Christensen, Tor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is described a method for regeneration of triethylene glycol (TEG) that has been used as a drying medium to remove water from a fluid such as natural gas, where a drier TEG is recovered at the bottom fraction in a regeneration column (7), where water vapor together with other gases is removed at the top fraction and where the partially dried TEG from the regeneration column (7) optionally is also supplied to a stripping column (9) for further dehydration where in the optional stripping column (9) and in the still column (7) there is supplied a stripping gas in countercurrent to the TEG stream where as , stripping gas there is mainly used gas which is recovered from the top …
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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 September 2, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 2, 2020.
- 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.