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Expired Canadian patentCanada

Call control with transmission priority in a packet communication network of an atm type

CA 2012868 C · Owner: Suzuki, Hiroshi · Inventors: Hayano, Shin-Ichiro; Suzuki, Hiroshi

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

In a high-speed packet multiplex communication network including a transmission line with a predetermined bandwidth and accommodating a plurality of information sources, the sources having various packet i delivery rates over a range of between a peak rate and a lower rate than an average rate and demanding various transport performances, the sources are preliminarily classified into a plurality of types according to transport performances required and different transmission priorities are assigned to the different types, respectively. Bandwidths of sources of first priority and second priority are determined ones corresponding to the peak rate and the average rate respectively. A virtual …

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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 March 22, 1990 and granted March 22, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 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.
FiledMarch 22, 1990
GrantedMarch 22, 1994
Term endedMarch 22, 2010
Patent numberCA 2012868 C
Classification (IPC)H04Q11/04 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMarch 22, 1990Patent grantedMarch 22, 1994Term endedMarch 22, 2010

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