Laminated membranes for diffusion limited gas sensors resistant to pressure variations
CA 2515170 C · Owner: General Electric Company · Inventors: Beauchemin, Claude; Babes-Dornea, Elena; Grincourt, Yves
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A micro fuel cell sensor having laminated gas permeable membrane. The sensor comprises a housing first and second gas diffusing electrodes spaced from one another a fuel-cell spacer having an acidic electrolyte disposed between said first and second electrodes and two gas permeable membranes. The first gas permeable membrane comprises a polymer laminated on a metal substrate wherein the substrate comprises pores that have dimensions at least less than one-half the thickness of the polymer film.
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 August 4, 2005 and granted December 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 4, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.