Recoverable extraction and injection probe for enhanced gradient remediation
CA 2084227 A1 · Owner: Braithwaite, Kathryn E. · Inventors: Dablow, John F. Iii; Braithwaite, Kathryn E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A decontamination system for decontaminating a contaminated volume of soil includes a probe (10) constructed of an elongated hollow tube (12) a point (20) formed, as a helical power screw so that the probe (10) may be removably drilled into the soil and, a number of apertures (26) formed on the tube (12) for injection of a pressurized fluid into the soil or for extraction of fluids and contaminants from the soil. At least on probe (10) may be used independently as an extraction probe (36) or in conjunction with at least one injection probe (34) such that contaminants (28,30,32) in the soil are forcibly drawn toward the extraction probe (36) for removal from the soil.
Read the whole patent
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 December 1, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 1, 2014.
- 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.