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Expired Canadian patentCanada

Magnetic resonance imaging method, and device for determining the pulse angle of an r.f.electromagnetic pulse

CA 1280161 C · Owner: Van Yperen, Gerrit H. · Inventors: Van Yperen, Gerrit H.; Van Der Meulen, Peter

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Abstract From the Canadian patent

Magnetic resonance imaging method and device for determining the pulseangle of an r.f. electromagnetic pulse. The known magnetic resonance imaging method of determining the r.f. power or pulse angle of an r.f. electromagnetic 90°-pulse or 180°-pulse has the drawback that the measurement inaccuracy is often high, that the experimentation time is comparatively long and that its use is limited to r.f. electromagnetic 90°-pulses or 180°-pulses only. In order to mitigate these drawbacks it is, proposed to determine the pulse angle of an r.f. electromagnetic pulse having a pulse angle a from two out of five echo resonance signals including one stimulated echo resonance signal generated by means …

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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 February 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 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.
FiledMarch 17, 1987
GrantedFebruary 12, 1991
Term endedFebruary 12, 2008
Patent numberCA 1280161 C
Classification (IPC)G01N24/08 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMarch 17, 1987Patent grantedFeb 12, 1991Term endedFeb 12, 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.