Superconducting magnet apparatus, cooling system therefor, and electromagnetic levitation traveling equipment incorporating the same
CA 2004689 C · Owner: Iida, Fumio · Inventors: Tada, Naofumi; Iida, Fumio; Takizawa, Teruhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a superconducting magnet apparatus comprising one winding of coiled superconductor, another winding of coiled superconductor wire, cooling device for supplying coolant to cooling vessels which contain the respective windings therein and a non-magnetic partition wall interposed between the cooling vessels containing the respective windings to airtightly separate them with, these windings being located at relative positions enabling mutual inductance to be effected therebetween even if a quenching is caused in such the superconducting magnet apparatus, it is designed not to lose the magnetic repulsive force so that an equipment traveling at high speed can be safely transferred at least to …
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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 December 6, 1989 and granted June 15, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 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.