Material treatment method and apparatus
CA 2354376 A1 · Owner: Tracsaw Manufacturing, Inc. · Inventors: Nilson, Ron; Stone, Thomas C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method are provided for treating base materials such as ore, of a leach pad in a precious metal mining operation. A tilling head of the apparatus, includes a cutter having a cutting face for engaging and loosening compacted base, materials. The tilling head is extended into the base material down to a tilling depth, so that the cutter moves loosened base material up and over the top of the tiller, apparatus before depositing it in a pile opposite the cutting face. The loosened base, material is deposited a distance from the tilling head that is sufficient to create a void, between the tilling head and the pile that extends down to the tilling depth to prevent, the …
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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 July 31, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2023.
- 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.