A process for processing waste incineration residues
CA 2216156 A1 · Owner: "Holderbank" Financiere Glarus Ag · Inventors: Edlinger, Alfred; Mistelli, Bruno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a process for processing waste incineration residues such, as, e.g. waste incineration slags in which the slags are, subjected to a reduction process while separating metals the, solid waste incineration residues are introduced into a steelworks slag bath in amounts ranging from 15 to 45 % by weight, based on the overall quantity, that the heavy metals or heavy metal compounds, such as, e.g. Zn Pb, Cd or Hg, chlorides, evaporating during melting of the waste incineration residues or slag are drawn off and the liquid bath is reduced by aid of carbon carriers and under the formation of an iron bath, whereupon the slag phase depleted from metals is granulated and used as a mixed cement …
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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 23, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 23, 2019.
- 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
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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.