Superconducting device having an extremely short superconducting channel formed of extremely thin oxide superconductor film and method for manufacturing same
CA 2054644 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Iiyama, Michitomo; Inada, Hiroshi; Nakamura, Takao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A superconducting device comprises a superconducting channel constituted in an oxide superconductor thin film deposited on a deposition surface of a substrate. A source electrode and a drain electrode are formed on the oxide superconductor thin film at opposite ends of the superconducting channel, so that a superconducting current can flow through the superconducting channel between the superconductor source electrode and the superconductor drain electrode. A gate electrode is formed through a gate insulator layer on the superconducting channel so as to control the superconducting current flowing through the superconducting channel. The gate electrode is in the form of a thin film and …
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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 31, 1991 and granted March 31, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 2013.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.