Membrane electrode assembly with electrode catalyst present on ion-conductive domains
CA 2539255 C · Owner: Nagaoka University Of Technology · Inventors: Yamada, Akifumi; Umeda, Minoru; Uchida, Isamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A membrane-electrode assembly (MEA) 1 has a solid polymer electrolyte membrane 2. The membrane 2 has ion-conductive domains 3 and non-ion-conductive domains 4 and an electrode catalyst 5. The electrode catalyst 5 is present selectively , on surface sites of the solid polymer electrolyte membrane 2 which corresponds to the , ion-conductive domains 3 rather than surface sites of the membrane 2 which corresponds to the non-ion-conductive domains 4. A spray liquid containing the electrode catalyst and a solvent is applied onto a surface of the membrane 2 by , electrostatic spray deposition to selectively adhere the electrode catalyst 5 on the , surface sites of the membrane 2 which …
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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 25, 2005 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 25, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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