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Expired Canadian patentCanada

Method and apparatus for hand-off of call in progress

CA 1306014 C · Owner: Kawano, Minori · Inventors: Kawano, Minori

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Abstract From the Canadian patent

METHOD AND APPARATUS FOR, HAND-OFF OF CALL-IN-PROGRESS ABSTRACT:, A method and apparatus for a hand-off of a call-inprogress according to the present invention is arranged such that both a first ratio of a length of time in which a, measured value of SNR is below a predetermined "threshold" to a total length of the measuring time and a second ratio, of a length of time in which a measured value of RSSI is, below a predetermined "threshold" to a total length of the, measuring time are detected and that the first ratio functions mainly when the "threshold" of RSSI is predetermined to a relatively low value; and the second ratio functions mainly when the "threshold" of RSSI is predetermined to …

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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 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 2009.
  • 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 16, 1988
GrantedAugust 4, 1992
Term endedAugust 4, 2009
Patent numberCA 1306014 C
Classification (IPC)H04B7/24 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 16, 1988Patent grantedAug 4, 1992Term endedAug 4, 2009

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