Efficient utilization of chlorine and/or moisture-containing fuels and wastes
CA 2223937 C · Owner: Murray, Robert G. · Inventors: Klosky, Michael K.; Murray, Robert G.; Dickinson, Norman L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for enhancing the fuel form, raising the energy content and , lowering the level of impurities of low rank coals and/or carbonaceous wastes like Municipal Solid Waste (MSW), Refuse Derived Fuel (RDF) and sewage , sludge, by providing the low rank fuel carbonaceous waste, or mixtures , thereof ans a slurry in water of processable viscosity. This feed slurry is heated under pressure (118), usually in the presence of an alkali (109) to a , temperature at which a significant physical and molecular rearrangement occurs, characterized by the splitting off of a substantial proportion of the oxygen bound in the low rank coal or carbonaceous waste as carbon dioxide (147). At these …
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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 5, 1996 and granted November 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2018.
- 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.