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Expired Canadian patentCanada

Cross-connection of wavelength-division-multiplexed high speed channels

CA 1290474 C · Owner: Kobrinski, Haim · Inventors: Kobrinski, Haim

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

A wavelength division multiplexing structure for establishing dedicated high bit rate point-to-point connections between network nodes is disclosed. The information transmitted out of any given network node is modulated on a plurality of wavelengths according to destination. These wavelengths are multiplexed and transmitted to the network hub. At the hub all the, different wavelengths from all the nodes are demultiplexed, passively rearranged, multiplexed again and transmitted to the appropriate destinations. The information handling capacity of this structure exceeds 1 Terabit/second.

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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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 5, 1988
GrantedOctober 8, 1991
Term endedOctober 8, 2008
Patent numberCA 1290474 C
Classification (IPC)H04B10/00 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMay 5, 1988Patent grantedOct 8, 1991Term endedOct 8, 2008

Sources & verification

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