Double belt bonding process and apparatus for manufacturing membrane el ectrode assemblies
CA 2446176 A1 · Owner: Ballard Power Systems Inc. · Inventors: Schroer, Martin; Schaefer, Joachim R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for manufacturing a membrane electrode assembly for an electrochemical cell comprises: feeding a sheet of ion exchange membrane material through a double belt press; feeding at least one electrode substrate through the double belt press; and applying heat and pressure to bond a portion of the membrane material and the electrode substrate within a process zone of the double belt press. An apparatus for manufacturing membrane electrode assemblies for an electrochemical cell comprises a double belt press. The present process can further comprise cutting a membrane electrode assembly, such as by longitudinal slitting to obtain strips of the desired width and/or cross-cutting …
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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 May 2, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 2, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2024.
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Timeline
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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.