Method and apparatus for recycling of scrap metal
CA 2204060 C · Owner: Teck Metals Ltd. · Inventors: Del Bucchia, Henry; Babakaiff, Phil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the recycling of scrap metal such, as copper wire, comprises the steps of combining the scrap metal with a concentrate of a metal similar to the scrap metal in a pressure vessel (10) and subjecting the metal concentrate to pressure oxidation along with the scrap metal. In one example the scrap metal comprises copper wire and the metal concentrate comprises a copper matte. An apparatus (16) for feeding the scrap metal to the autoclave (10), without interrupting the operation of the autoclave (10) is also provided.
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 April 30, 1997 and granted August 26, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2019.
- 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.