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Expired Canadian patentCanada

Amorphous magnetic alloy

CA 1086986 A · Owner: Sony Corporation · Inventors: Uedaira, Satoru; Aso, Koichi; Makino, Yoshimi

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An amorphous magentic alloy consists of 2 to 20 at % (atomic percent) of ruthenium atoms; 10 to 30 at% of atoms of at least one amorphous forming element selected from the group of phosphous, carbon, silicon boron and, germanium; and iron atoms as the predominant component of the residual. - 1 -

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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 October 7, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 8, 1978
GrantedOctober 7, 1980
Term endedOctober 7, 1997
Patent numberCA 1086986 A
Classification (IPC)C22C38/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedSep 8, 1978Patent grantedOct 7, 1980Term endedOct 7, 1997

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.