In-situ soil stabilization method and apparatus
CA 2129103 C · Owner: Circeo, Louis J. Jr. · Inventors: Circeo, Louis J. Jr.; Camacho, Salvador L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for in-situ solidifying and stabilizing a mass of unstable foundation soil (A B) utilizes a plasma arc, torch (30). The torch is inserted into a drilled and cased hole (22) to a selected depth in a subterranean unstable soil layer and the torch is energized. The intense heat generated by the torch melts the soil material close to the hole and forms a pool of melt (26) while more remote sections (28, 29) are baked to a brick-like consistency or dried and strengthened. Upon cooling the central melt-, ed soil material cools to a hard vitrified column (24) with physical, properties equivalent to a hard dense rock. Variations of the meth-, od apply to a variety of …
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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 25, 1993 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.