Activated cathode for electrolysis cells and method for preparing the same
CA 2114757 A1 · Owner: Meneghini, Giovanni · Inventors: Meneghini, Giovanni; Traini, Carlo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An activated cathode assembly for use in diaphragm or membrane electrolysis cells comprising pairs of interleaved cathodes and anodes (B) having openings said, cathodes being provided with a corrosion resistant ion exchange membrane or porous diaphragm, said cells (C) being provided with inlets for feeding brine and outlets for the withdrawal of chlorine (H), hydrogen (I) and caustic (L) the cathode assembly comprising a rigid cathode structure covered with a thin and flexible corrosion resistant perforated or expanded sheet or mesh (F) provided with an electrocatalytic coating for hydrogen evolution in an alkaline environment, the cathode structure and sheet or mesh (F) being in electrical …
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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 February 2, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 2, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 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.