System and method for removing hydrocarbons from gaseous mixtures using multiple adsorbing agents
CA 2099693 A1 · Owner: Hertl, William · Inventors: Patil, Mallanagouda Dyamanagouda; Hertl, William; Lachman, Irwin Morris
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method are disclosed for removing hydrocarbons from a gaseous mixture, which comprises selecting a plurality of agents which are effective for adsorbing hydrocarbons at predetermined temperatures wherein for at least two of the adsorbing agents the, temperatures at which the maximum adsorption rates for the hydrocarbons occurs, are different from one another and, contacting the adsorbing agents with the gaseous mixture at the predetermined temperatures to cause adsorption of the hydrocarbons. A multi-stage catalyst system for converting NOx, CO, and hydrocarbons from a gaseous mixture to innocuous products is disclosed, which comprises the above described system for removing …
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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 June 29, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2015.
- 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.