Method for making superconductive electric wire
CA 1338460 C · Owner: Sadakata, Nobuyuki · Inventors: Sadakata, Nobuyuki; Ikeno, Yoshimitsu; Kohno, Osamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of making superconductive electric wire. The method involves the steps of: (a) preparing a tubular sheath made of silver or silver alloy, the cross sectional area of which is equal to or larger than 2/3 of the cross sectional area of a hollow space formed in the sheath; (b) preparing a green material comprising material elements of a superconductive material; (c) filling the hollow space of the sheath with the green material; (d) reducing the diameter of the sheath together with the green material contained therein; and (e) heat-treating the sheath and the green material in an oxygenous atmosphere, at a temperature 800° to 1100° C for between 1 to 300 …
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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 July 23, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2013.
- 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.