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Expired Canadian patentCanada

Actuator and communication systems

CA 1340489 C · Owner: Sato Vicinity Pty Ltd · Inventors: Murdoch, Graham Alexander Munro

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

There is disclosed an actuator device adapted to be in the form of a transponder for influence by a magnetic powering field, the device having an inductive means to receive a magnetic field to provide a signal to be rectified for supplying power to the actuator, the inductive coil being arranged to simultaneously transmit signals to an interrogator. The interrogator is adapted to radiate a magnetic field which is received by the actuator and to transmit data wherein the magnetic field includes magnetic modulation and the actuator is adapted to demodulate the magnetic field and interpret data obtained thereby.

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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 April 6, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 11, 1989
GrantedApril 6, 1999
Term endedApril 6, 2016
Patent numberCA 1340489 C
Classification (IPC)H04B1/59 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedApril 11, 1989Patent grantedApril 6, 1999Term endedApril 6, 2016

Sources & verification

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