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Expired Canadian patentCanada

Fully shared communications network

CA 2015248 C · Owner: Ash, Gerald R. · Inventors: Ash, Gerald R.; Schwartz, Steven D.

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

The architecture of a communication network comprising a plurality of nodes interconnected by a transmission facility having a bandwidth divisible into channels of respective bandwidths e.g. optical, fiber, is enhanced by fully sharing the network bandwidth among the network nodes, such that each pair of nodes on periodic basis, dynamically, establishes respective direct links to each of the other network nodes in, which a direct link is formed from a group of channels obtained from the network bandwidth. The remaining bandwidth is then used to form a pool of bandwidth which is shared among the network nodes on a dynamic basis such as, for example, establishing a communication path between …

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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 24, 1990 and granted December 17, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 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 24, 1990
GrantedDecember 17, 1996
Term endedApril 24, 2010
Patent numberCA 2015248 C
Classification (IPC)H04Q3/42 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedApril 24, 1990Patent grantedDec 17, 1996Term endedApril 24, 2010

Sources & verification

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