Process for producing a high-temperature superconductor and also shaped bodies composed thereof
CA 1321870 C · Owner: Bock, Joachim · Inventors: Bock, Joachim; Preisler, Eberhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for producing a high-temperature superconductor and also shaped bodies composed thereof Abstract of the disclosure:, To produce a high-temperature superconductor of the composition Bi2(Sr,Ca)3Cu2O/8+x having a strontium to calcium ratio of 5 : 1 to 2 : 1 and a value of x between 0 and 2, the oxides and/or carbonates of bismuth strontium, calcium and copper are vigorously mixed in a stoichiometric ratio. The mixture is heated at temperatures of 870 to 1100°C until a homogeneous melt is obtained. The melt is poured into molds and allowed to solidify in them. The cast bodies removed from the molds are annealed for 6 to 30 hours at 780 to 850°C. Finally the annealed, cast bodies are …
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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
- Granted September 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 7, 2010.
- 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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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.