Process and apparatus for recovering precious metals from soil materials
CA 1318641 C · Owner: Green, John D. · Inventors: Green, John D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for recovering precious metal particles from a slurried soild material by amalgamation comprises an amalgamating apparatus through which a soil material is circulated with the soil material in slurry form and submersed in a body of amalgamating mercury. The system includes a soil material conditioner that provides a slurried soil material having a predetermined small partice size to the amalgamation apparatus. The system also includes a mercury conditioner to purify and charge the mercury for use in the amalgamating mercury body and, includes a mercury amalgam recovery separator.
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
- Granted June 1, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 1, 2010.
- 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.