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Expired Canadian patentCanada

Arrangement for switching concentrated telecommunications packet traffic

CA 1315376 C · Owner: Roediger, Gary Arthur · Inventors: Knudsen, Michael Jeremy; Zelle, Bruce Ronald; Richards, Gaylord Warner

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

Abstract, A high capacity metropolitan area network (MAN) is described. Data traffic from users is connected to data concentrators at the edge of the network and is transmitted over fiber optic data links to a hub where the data is switched. The hub includes a plurality of data switching modules each having a control, means, and each connected to a distributed control space division switch. Advantageously the data switching modules, whose inputs are connected to the concentrators, perform all checking and routing functions while the 1024x1024, maximum size space division switch whose outputs are connected to the, concentrators provides a large fan-out distribution network for reaching many …

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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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 22, 1988
GrantedMarch 30, 1993
Term endedMarch 30, 2010
Patent numberCA 1315376 C
Classification (IPC)H04L12/54 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedNov 22, 1988Patent grantedMarch 30, 1993Term endedMarch 30, 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.