Method of forming compound oxide superconducting thin film
CA 2064169 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Shikata, Shin-Ichi; Itozaki, Hideo; Nakanishi, Hidenori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A 100 oriented ZrO2 thin film is formed on selected regions of a 100 deposition surface of a silicon substrate and a Y2O3 thin film, deposited on the ZrO2 thin film and exposed regions of the deposition surface of the silicon substrate. A Y-Ba-Cu type compound oxide superconducting thin is deposited on the Y2O3 thin film. The Y-Ba-Cu type compound oxide superconducting thin film positioned above the ZrO2 thin film is crystal-grown in a 001 orientation and the Y-Ba-Cu, type compound oxide superconducting thin film is crystal-grown in a 110 orientation in the other region.
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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 26, 1992 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2014.
- 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.