Metal cathode sheet assembly
CA 2361314 A1 · Owner: Knies, Gunter · Inventors: Knies, Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a metal cathode sheet assembly for use in the electrolytic recovery of pure metals, especially copper in an electrolysis , tank. The metal, cathode sheet is provided at its side edges with an edge protector formed by a grooved profile, strip. The edge protector is secured to the side edge by engaging at least one trapezoidal, holding wedge that has back surfaces facing away from the narrow sides. The wedge is able, to be secured in a cutout on the edge. The edge protector grips behind the back surface with, counter-support surfaces.
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 8, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 8, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2023.
- 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.