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Expired Canadian patentCanada

Near-zero magnetostrictive amorphous alloy with high saturation induction

CA 1082491 A · Owner: Allied Chemical Corporation · Inventors: Nesbitt, Ethan A.; O'Handley, Robert C.; Mendelsohn, Lewis I.

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Abstract From the Canadian patent

A new series of glassy metal alloys with near-zero magnetostriction is disclosed. The glassy alloys have the composition (Cox Fe1-x)aBbCc, where "x" ranges from about 0.84 to 1.0 "a" ranges from, about 78 to 85 atom percent "b" ranges from about 10 to 22 atom, percent and "c" ranges from 0 to 12 atoms percent with the proviso, and the sum of "b" and "c" ranges from about 15 to 22 atom percent. The magnetostriction of these alloys ranges from about +5 x 10-6 to -5 x 10-6 and the saturation induction is at least about 10 kGauss. The transition metal content is responsible for the low magnestostriction in these alloys, as well as their high saturation induction. The metalloid content (needed …

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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 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 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.
FiledFebruary 28, 1977
GrantedJuly 29, 1980
Term endedJuly 29, 1997
Patent numberCA 1082491 A
Classification (IPC)C22C19/07 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedFeb 28, 1977Patent grantedJuly 29, 1980Term endedJuly 29, 1997

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