Simultaneous removal of residual impurities and moisture from a gas
CA 2059703 C · Owner: Mobil Oil Corporation · Inventors: Hoffman, Barry E.; Audeh, Costandi Amin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention advantageously provides a conventional desiccant bed with means for removing residual mercury, H2S and CO2 from a gas, such as a natural gas stream by, replacing an inert protective layer of pellets with an active compound comprising at least one of copper hydroxide copper, oxide and order sulfide. The active compound provides the desiccant bed with the additional advantage of removing H2S and CO2 as well as mercury from the gaseous fraction without incurring the pressure loss inherent in utilizing a separate downstream adsorbent bed for removing Hg.
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 January 20, 1992 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 2014.
- 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.