Cathode electrode structures for sodium sulphur cells and their manufacture
CA 2081669 A1 · Owner: Stribley, Andrew C. · Inventors: Riley, David J.; Stribley, Andrew C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of forming a cathode structure for a sodium sulphur cell uses sheets of electrically conductive fibrous material which have fibres predominantly extending parallel to one plane. A sheet of the fibrous material is cut into a plurality of strips which are then assembled to form at least one sheet-like structure in which the fibres predominantly have a component of direction normal to the plane of the sheet-like structure. The structure is shaped and compressed to form at least one cathode component which, component comprises at least a section of the required shape of the cathode structure. The compressed component is impregnated with a cathodic reactant.
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 May 10, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2013.
- 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.