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Expired Canadian patentCanada

Spectrum management systems and methods for cable networks

CA 2535643 C · Owner: Cooper, Michael · Inventors: Boontor, Poth; Moran, John L. Iii; Cooper, Michael

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Abstract From the Canadian patent

The present methods and systems provide spectrum management for enhancing upstream performance for cable networks. According to one embodiment a method , of enhancing upstream performance in a cable network includes the steps of measuring performance of an upstream channel at a first data signaling rate; determining whether the upstream channel supports a second data signaling rate based on the performance; and selectively transitioning to the second data signaling rate based on said determination. The second data signaling rate is a higher rate than the first data signaling rate.

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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 September 10, 2004 and granted March 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 10, 2004
GrantedMarch 19, 2013
Term endedSeptember 10, 2024
Patent numberCA 2535643 C
Classification (IPC)H04L1/00 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedSep 10, 2004Patent grantedMarch 19, 2013Term endedSep 10, 2024

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