Soil and industrial waste decontamination
CA 1266573 C · Owner: Limonchik, Abe · Inventors: Avedesian, Michael M.; Limonchik, Abe; Torossian, Hosep
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and an apparatus for the decontamination of industrial waste and the revitalization of soil containing industrial waste, having dioxins and/or polychlorinated aromatic compounds, without depletion of the valuable nutrient contained in said soil. The process comprises contacting a soil or industrial waste with supercritical carbon dioxide, an ecologically acceptable fluid bringing, the carbon dioxide to temperature and pressure to maintain said fluid in its supercritical state to dissolve the dioxins and/or polychlorinated aromatic compounds while, producing an insoluble and a soluble fraction. The soluble fraction is then separated from the insoluble fraction. The insoluble …
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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
- Granted March 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2007.
- 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.