Determination of the fuel concentration in the electrolyte of fuel cells that are operated with liquid fuel
CA 2381964 A1 · Owner: Frank, Michael · Inventors: Frank, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for determining the fuel concentration in the electrolyte of fuel cells that are operated with liquid fuel and especially the concentration of methanol in the electrolyte of direct methanol fuel cells. The capacity of a capacitor is measured using the fuel/electrolytemixture as a dielectric. The dielectric constant of the mixture is determined on the basis of said capacity and the fuel concentration is subsequently determined.
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 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 2022.
- 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.