Methods for detecting and extracting gold
CA 2397251 A1 · Owner: University Of Washington · Inventors: Clendenning, James B.; Furlong, Clement E.; Kirshenbaum, Noel W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for detecting gold and quantitating gold in ore samples utilizing a gold-specific, protein are provided, including methods for multiple sample handling. Also provided are, methods for extracting gold from mineral suspensions utilizing a magnetic mineral binding, reagent and gold-specific protein or hydrophobic reagent and gold-specific protein in, conjunction with a flotation reagent.
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 August 8, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 8, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 8, 2024.
- 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.