Layered structure comprising insulator thin film and oxide superconductor thin film
CA 2127916 C · Owner: Tanaka, So · Inventors: Iiyama, Michitomo; Tanaka, So
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A layered structure formed on a substrate comprising an oxide superconductor thin film deposited on the substrate a noble metal, monolayer deposited on the oxide superconductor thin film and an insulator thin film deposited on the noble metal monolayer. The noble metal monolayer prevents interdiffusion between the oxide superconductor thin film and the insulator thin film so that they have excellent properties.
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 July 13, 1994 and granted November 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 2016.
- 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.