Process for removal of hydrophobic organic contaminants from solid state materials
CA 1322862 C · Owner: Samson, Rejean · Inventors: Sanschagrin, Sylvie; Samson, Rejean; Cseh, Tibor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process for removing organic contaminants from soil which comprises circulating through the contaminated soil a liquid phase adapted to transfer the contaminants from soil to said liquid phase until substantial transfer of all the contaminants to the liquid phase and causing, said liquid phase containing the contaminants to circulate through a solid adsorbent material until the contaminants have been adsorbed on the solid adsorbent and it also relates to a process for removing organic contaminants from soil which comprises circulating through the contaminated soil a liquid phase adapted to transfer a portion of the contaminants to the liquid phase and then …
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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 October 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 2010.
- 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.