Expired Canadian patentCanada
Electromagnetic stirring method and device for molten metals, namely steels, in a continuous casting process
CA 1204575 A · Owner: Institut De Recherches De La Siderurgie Francaise (Irsid) · Inventors: Chone, Jeanne; Birat, Jean-Pierre
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
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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 May 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 27, 1983
GrantedMay 20, 1986
Term endedMay 20, 2003
Patent numberCA 1204575 A
Classification (IPC)B22D27/02 +1 more
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.