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Expired Canadian patentCanada

Synchronizing continuous bit stream oriented terminals in a communications network

CA 2014259 C · Owner: Motorola, Inc. · Inventors: Ahmed, Hassan M.

CIPO record

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

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Abstract From the Canadian patent

The frequency of a clock for a receiving terminal is controlled based on a predetermined clock frequency of a terminal that produces a continuous stream of data at a predetermined frequency for transmission to the receiving terminal over a communications network of the kind in which data is transmitted between the terminals in discrete packets that are delayed on the network by possibly different amounts. Arrivals of packets that are sent to the receiving terminal are detected, time intervals between the arrivals of successive packets are determined, and the time intervals are processed to generate an estimate that is related to the predetermined frequency. The frequency of the receiving …

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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

  • Filed April 10, 1990 and granted November 15, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2012.
  • 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 10, 1990
GrantedNovember 15, 1994
Term endedApril 10, 2010
Patent numberCA 2014259 C
Classification (IPC)H04L7/00 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedApril 10, 1990Patent grantedNov 15, 1994Term endedApril 10, 2010

Sources & verification

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