Process for dividing a silver-matrix htc superconductor multifilament strand, and multifilament strand thereby produced
CA 2231076 C · Owner: Alcatel Alsthom Compagnie Generale D'Electricite · Inventors: Grivon, Fernand; Herrmann, Peter Friedrich; Duperray, Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Tube powder process for manufacturing a silver matrix HTc superconductor multifilament strand in which prior to the monofilament stage, a composite multilayer material is prepared comprising at least one silver-based sheet and at least one layer of non-superconductor ceramic material permeable to oxygen and during the monofilament stage a thickness of composite multilayer material is inserted between a first and a second thickness of silver-based material thereby forming the said a first silver-based covering.
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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 March 26, 1998 and granted May 14, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2020.
- 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.