Stabilised zirconium oxide for an observation window
CA 2443192 C · Owner: Paul Scherrer Institut · Inventors: Degueldre, Claude A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the invention, in order to produce an observation window (7) in reaction vessels, autoclaves, boilers, nuclear reactors and the like a , cubically stabilised zirconium oxide monocrystal can be used. Preferably calcium, magnesium, yttrium or another transparent element of the heavy lanthanoids is used to stabilise zirconium oxide. Due to the excellent transparency of such observation windows (7) produced by means of a cubically stabilised zirconium oxide monocrystal they are especially suitable for , monitoring processes in situ in closed vessels such as the above-mentioned reaction vessels and the like, the processes being monitored either optically by means of …
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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 March 21, 2002 and granted March 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2024.
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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.