Process for treatment of a fluid
CA 2100259 C · Owner: Trojan Technologies Inc. · Inventors: Cairns, William L.; Rosenfeld, Jack M.; Carey, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process comprised of substantially separate kinetically-controlled steps for continuously treating a fluid comprising at least one chemical contaminant. The process comprises the steps of: (i) contacting the fluid with a particulate adsorbent material; (ii) allowing the adsorbent material to adsorb the chemical contaminant to produce a substantially purified fluid and a partially loaded contaminant-carrying adsorbent material where the extent of loading depends on the kinetic requirements of the overall process; (iii) separating the contaminant-carrying adsorbent material from the substantially purified fluid; (iv) contacting the contaminant-carrying adsorbent material with an aqueous …
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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 January 8, 1992 and granted July 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 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.