Substrate for superconducting device
CA 2047020 C · Owner: Nakanishi, Hidenori · Inventors: Nagaishi, Tatsuoki; Nakanishi, Hidenori; Tanaka, Saburo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel composite comprising a silicon substrate (1) and a plurality of layers of a first oxide superconductor layer (3) a dielectric material, layer (4), a second oxide superconductor layer (5) a second dielectric, material layer (6) and a third oxide superconductor layer (7) deposited directly or through a buffer layer (2) in this order on the silicon substrate. The composite is used for fabricating superconducting devices such as Josephson element, SQUID and microwave devices.
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 15, 1991 and granted May 6, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 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
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.