Superconducting field effect device having a superconducting channel and method for manufacturing the same
CA 2186840 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Nakamura, Takao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A FET type superconducting device comprises a substrate having a principal surface, a thin superconducting channel formed of an oxide superconductor layer over the principal surface of the substrate a, superconducting source region and a superconducting drain region formed of an oxide superconductor layer over the principal surface of the substrate at the both ends of the superconducting channel which connects the superconducting source region and the superconducting drain region so that superconducting current can flow through the superconducting channel between the superconducting source region and the superconducting drain region and a gate electrode on a gate insulator disposed on the …
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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 September 30, 1996 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2018.
- 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.