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Expired Canadian patentCanada

Fine amorphous metallic wires

CA 1281561 C · Owner: Tomioka, Hiroyuki · Inventors: Tomioka, Hiroyuki; Ogasawara, Isamu; Furukawa, Shinji

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Abstract From the Canadian patent

A fine amorphous metallic wire having a circular cross section and stability to a bias magnetic field said, wire being composed of an alloy having the following composition formula, (Col-a-bFeaMb)100-x-ySixBY wherein M is at least one element selected from Cr Mo, Ni, Nb, Ta, Pd, Pt, and Cu, x < 20 atomic% 7, atomic% < y < 35 atomic%, 7 atomic% < x+y < 35 atomic% 0.01 < a < 0.1, and 0.001 < b < 0.05. The fine amorphous metallic wire has low magnetostriction high magnetic, permebility, high saturation magnetic flux density and, excellent toughness, and is stable against a bias magnetic field. Hence, it can be used as a material for electromagnetic devices such as a coordinate reading device, …

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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 March 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 22, 1986
GrantedMarch 19, 1991
Term endedMarch 19, 2008
Patent numberCA 1281561 C
Classification (IPC)C22C45/04 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJuly 22, 1986Patent grantedMarch 19, 1991Term endedMarch 19, 2008

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