Total gold by cgl
CA 2046583 A1 · Owner: Dahya, Amyn S. E. · Inventors: Dahya, Amyn S. E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the evaluation of ore bodies for precious metal content rock and drill core samples are analyzed for the precious metal of interest. The analyses are most commonly carried out by a technique of smelting called fire assaying. There are drawbacks in this procedure which arises mainly from quantity of sample material used for the analysis or fire assay step. In the Total Gold CGL technique (also referred to as Casmyn CGL technique), the statistical error, associated with subsampling the rock and drill core samples is removed by taking the entire sample for processing and analysis. The CGL technique consists of grinding the sample in an inert grinding medium and simultaneously dissolving 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 9, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2013.
- 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
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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.