Superconductive electromagnetic wave mixer and superconductive electromagnetic wave mixing apparatus employing the same
CA 2004555 C · Owner: Yamamoto, Keisuke · Inventors: Shinjo, Katsuhiko; Yamamoto, Keisuke; Kaneko, Norio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a, superconductive electromagnetic wave mixer comprising a local-oscillator section and a recciving section said receiving section serving as a section at which an electromagnetlc wave from the local-oscillator aection and an externally originating electromagnetic wave are combined. The local-oscillator section and said receivins section are each formed by at least one Josephson junction employing at least one oxide superconductor.
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 December 4, 1989 and granted December 27, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2011.
- 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.