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Expired Canadian patentCanada

Magnetic transducer head utilizing magnetoresistance effect

CA 1209261 A · Owner: Sony Corporation · Inventors: Hideo, Suyama; Imakoshi, Shigeyoshi; Iida, Yasuhiro

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Abstract From the Canadian patent

According to the present invention based on the, fact that the magnetoresistance characteristic of the magnetoresistance effect element is changed depending on the angle between the anisotropic direction namely, the axis of easy magnetization of the magnetoresistance element and the direction of the signal magnetic field applied thereto, it is discovered that particularly when an angle ? between the anisotropic direction of the magnetoresistance element and the direction of the signal magnetic field applied thereto is selected in the ranges of 50° ? ? ? 85°, the magnetoresistance characteristic having an excellent linearity can be provided. A magnetoresistance effect type magnetic …

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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 August 5, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 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.
FiledDecember 6, 1983
GrantedAugust 5, 1986
Term endedAugust 5, 2003
Patent numberCA 1209261 A
Classification (IPC)G11B5/39

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedDec 6, 1983Patent grantedAug 5, 1986Term endedAug 5, 2003

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