Determination of the alcohol concentration in the electrolyte of fuel cells
CA 2385643 A1 · Owner: Preidel, Walter · Inventors: Preidel, Walter
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 alcohol concentrations in an alcohol/water-mixture found in fuels cells operated using said mixture in , particular direct-methanol-fuel-cells. A portion of the alcohol/water-mixture is separated and transported against a predefined pressure. The separated part of the mixture is heated to boiling, the boiling temperature is measured and the amount of alcohol in the mixture is 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 September 12, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 12, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 12, 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.