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Expired Canadian patentCanada

Port packet queuing

CA 2407310 C · Owner: Conversant Intellectual Property Management Inc. · Inventors: Wyatt, Richard M.

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 port queue includes a first memory portion having a first memory access time and a second memory portion having a second memory access time. The first memory portion includes a cache row. The cache row includes a plurality of queue entries. A packet pointer is enqueued in the port queue by writing the packet pointer in a queue entry in the cache row in the first memory. The cache row is transferred to a packet vector in the second memory. A packet pointer is dequeued from the port queue by reading a queue entry from the packet vector stored in the second memory.

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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 26, 2001 and granted February 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2023.
  • 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 26, 2001
GrantedFebruary 19, 2013
Term endedApril 26, 2021
Patent numberCA 2407310 C
Classification (IPC)H04L49/10 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedApril 26, 2001Patent grantedFeb 19, 2013Term endedApril 26, 2021

Sources & verification

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