Solid-state oxygen sensor
CA 2066273 C · Owner: Europaische Wirtschaftsgemeinschaft (E.W.G.) · Inventors: Mari, Claudio Maria; Manes, Livio
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 solid oxygen sensor consisting of an electrolytical cell, with a first electrode exposed to the atmosphere whose partial oxygen pressure is to be measured, a second electrode exposed to a reference atmosphere and a solid electrolyte in surface contact with both electrodes, the material of the electrolyte being a ceramic oxide or a vitreous phase with pure ion conduction and at least the first electrode containing a nonstoechiometric ceramic oxide. According to the invention the first electrode consists of a mixture (CERMET) of at least one non-stoechiometric ceramic oxide and a metal the, latter being chosen from the group constituted by gold platinum, nickel and …
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 24, 1990 and granted June 12, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 2012.
- 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.