Method for producing a rotationally symmetrical molded part of a high-temperature superconductor
CA 2107149 A1 · Owner: Asea Brown Boveri Ltd. · Inventors: Unternahrer, Peter; Baumann, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for producing a rotationally symmetrical molded part of a high-temperature superconductor In order in the case of a rotationally symmetrical molded part of a high-temperature superconductor to achieve a critical current density of jc ? 800 A/cm2 at a temperature of 77 K use is made of a, powder mixture (8) having the stoichiometric composition of Bi2+xEA3Cu2Oy where, -0.15 < x < 0.4; EA = an alkaline earth metal or a mixture of alkaline earth metals in, particular a mixture of Sr and Ca in the ratio of Sr : Ca = (2 + z) : (1 - z), where 0 < x < 0.2; 8 ? y ? 8.3. With the aid of a conveying chute (9), the powder mixture (8) is brought uniformly at room temperature with a grain size of …
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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 28, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 28, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2015.
- 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.