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Expired Canadian patentCanada

Neural computation by time concentration

CA 1303222 C · Owner: California Institute Of Technology · Inventors: Hopfield, John Joseph; Tank, David William

CIPO record

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Abstract From the Canadian patent

Abstract, The invention solves the problem of pattern recognition in a temporal signal that is subject to distortions and time warp. The arrangement embodying the invention comprises a neural network an input interconnection network, and a plurality of signal modification circuits. A plurality of input leads delivers apreselected characteristic stimulus to associated signal modification units and in, response to an applied stimulus each signal modification unit develops a plurality of output signals that begins at the time of stimulus application rises to a peak, and decays thereafter. The mean time delay of each output (time to reach the peak) is different for each of the modification unit …

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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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 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 29, 1988
GrantedJune 9, 1992
Term endedJune 9, 2009
Patent numberCA 1303222 C
Classification (IPC)G10L15/16 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 29, 1988Patent grantedJune 9, 1992Term endedJune 9, 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.