Reclamation of metal plate
CA 2134941 A1 · Owner: Bragg-Smith, Sylvia I. · Inventors: Bragg-Smith, Sylvia I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of removing exposed precious metal or any other plating from a metalic or non metalic base. Although this process deals primarily with the recovery of precious metal the uses for removing electroplates for the primary upgrading of base metal are enormous. Such as tin on copper or brass. This process also provides a alternative to the use of cyanide and or incineration.
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 November 2, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 2, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 2016.
- 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.