Carbon-based adsorption powder containing cupric chloride
CA 2451534 A1 · Owner: Merck & Co. Inc. · Inventors: El-Shoubary, Youssef; Maes, Rudy; Seth, Subash C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carbon-based, adsorption powder containing an effective amount of cupric chloride suitable for removing mercury from a high temperature high moisture , gas stream, wherein the effective amount of cupric chloride ranges from about 1 to about 45 wt percent. Additional additives such as potassium , permanganate, calcium hydroxide potassium iodide and sulfur, may be added to the powder to enhance the removal of mercury from the gas stream.
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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 July 5, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 5, 2024.
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Timeline
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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.