Hydrogen sensor using a solid hydrogen ion conducting electrolyte
CA 2260563 C · Owner: Kuriakose, Areekattuthazhayil K. · Inventors: Kuriakose, Areekattuthazhayil K.; Maffei, Nicola
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reliable gaseous hydrogen detection and measuring device which is simple easy to use, does not require any reference gas supply and which can be of reasonably rugged construction. The device utilises a disc comprising a solid state ceramic hydronium conductor of the general formula Na(H3O) x Zr2Si x P (3-x) O12 together with a silver based electrode system on one side and a catalytic noble metal electrode, such as platinum on the other. By measurement of the output voltage across the electrodes both the presence, and the amount, of hydrogen in a gaseous system can be 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 February 1, 1999 and granted November 4, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 1, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 2021.
- 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.