Ventilation system for electrolytic cell
CA 2236200 C · Owner: Berkoe, Jonathan M. · Inventors: Berkoe, Jonathan M.; Kohut, Stephen J.; Murray, James A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrowinning cell comprised of a tank; an electrolytic solution within the tank defining a solution surface at a predetermined level within the tank; aplurality of flat metallic electrode plates each of the plates having a support beam along an edge thereof; a support assembly disposed outside the tank for supporting a plurality of the electrodes by the support beams the support, assembly dimensioned to position the electrodes in side-by-side spaced apart, parallel relationship with a lower portion of the electrodes immersed in the electrolytic solution and an upper portion disposed above the solution surface the, upper portions of the electrodes and the solution surface forming …
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 29, 1998 and granted June 18, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2020.
- 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.