Power feed composition for forming refractory oxide thermal shock resis tant coating, process and article
CA 2053188 C · Owner: Nitta, Hideo · Inventors: Nakamura, Yukihiro; Amano, Mashiko; Nitta, Hideo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermal spray powder feed composition for forming a refractory oxide coating comprising a mixture of zirconium silicate and zirconia stabilized with a stabilizing oxide. The as-deposited coating has a chemical composition of which by x-ray phase analysis comprises ZrSiO4 and ZrO2.x where x is selected from the group consisting of CaO, Y2O3, MgO, CeO2, and HfO2.
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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 October 10, 1991 and granted December 16, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2013.
- 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
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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.