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Expired Canadian patentCanada

Method of and device for determining a nuclear magnetization distribution in a region of a body

CA 1214211 A · Owner: N.V. Philips'Gloeilampenfabrieken · Inventors: Van Uijen, Cornelis M.J.; Den Boef, Johannes H,

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Abstract From the Canadian patent

28, ABSTRACT:, "Method of and device for determining a nuclear magnetization distribution in a region of a body." During measurement cycles for generating and sampling FID signals in NMR imaging devices 9 a 180° pulse and subsequently a 90° excitation pulse are added to the pulse sequence. The 180° pulse produces an additional echo signal. During (the maximum of) the echo signal the 90°, pulse is generated. The waiting period occurring before the beginning of a next measurement cycle can thus be substantially reduced without giving rise to a significant signal loss in the echo signals to be generated during said cycle. In addition to a reduction of the measurement time, NMR images with …

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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 November 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 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.
FiledMay 31, 1984
GrantedNovember 18, 1986
Term endedNovember 18, 2003
Patent numberCA 1214211 A
Classification (IPC)G01N24/08 +1 more

Timeline

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1985198719891991199319951997199920012003Application filedMay 31, 1984Patent grantedNov 18, 1986Term endedNov 18, 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.