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Expired Canadian patentCanada

Precipitation loss compensation and disablement for avoidance of satellite transponder overloading

CA 1232327 A · Owner: Nec Corporation · Inventors: Ohno, Satoru; Shimada, Yasuhisa

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Abstract From the Canadian patent

Precipitation Loss Compensation and Disablement for Avoidance of Satellite Transponder Overloading" ABSTRACT OF THE DISCLOSURE, A transmitting power control system is disclosed wherein a master earth station sends a pilot signal to a satellite which retransmits it to the master station as well as to slave earth stations. A beacon signal is also sent from the satellite to the master station which compares it with the received pilot signal and controls its own tranmission power level according to the result of the comparison so that the power level of retransmitted pilot signal is maintained constant. A warning signal is sent from the master station to all the slave stations when the received …

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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 2, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2005.
  • 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 8, 1985
GrantedFebruary 2, 1988
Term endedFebruary 2, 2005
Patent numberCA 1232327 A
Classification (IPC)H04B7/18 +1 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMarch 8, 1985Patent grantedFeb 2, 1988Term endedFeb 2, 2005

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