Compositions for high power piezoelectric ceramics
CA 2604841 C · Owner: Liufu, De · Inventors: Liufu, De
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A class of ceramic compositions according to the formula Pb(1-z)Mz (Mn1/3Sb2/3) x (ZryTi1-y) 1-x03 where M is selected to be either Sr or Ba x , is selected to be between 0.01 and 0.1 y is selected to be between 0.35 and , 0.55 and z is selected to be between 0.01 and 0.10. In some embodiments of the above composition, one or more dopants is added to the compositions. The dopant (s) may be selected from the group comprising: PbO CeO2, SnO2, Sm2O3, TeO2, MoO3, Nb2O5, SiO2 CuO, CdO, HfO2, Pr2O3, and mixtures thereof . The dopants can be added to the ceramic composition in individual amounts ranging from 0.01 wt% to up to 5.0 wt%. The preferred ceramic compositions exhibit one or more 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 April 11, 2006 and granted July 22, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.