Lamination apparatus and methods
CA 2480919 A1 · Owner: Hirsch, Donald I. · Inventors: Hirsch, Donald I.; Ripley, Scott A.; Bader, William F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Components for the manufacture of polymer electrolyte membrane fuel cells are provided, as well as apparatus and automatable methods for their manufacture by rotary die cutting and by lamination of various layers to form membrane electrode assemblies. A method and apparatus for performing the method are provided for making a membrane electrode assembly comprising the steps of providing a web of polymer electrolyte membrane material (110) and a laminating station (50), where the web of polymer electrolyte membrane material (110) is drawn between a pair of laminating rollers (180 190) in the , laminating station which form a laminating nip; die-cutting a first and second web of …
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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 11, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 11, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2025.
- 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.