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Expired Canadian patentCanada

Switch components and multiple data rate non-blocking switch network utilizing the same

CA 2004589 C · Owner: Upp, Daniel C. · Inventors: Upp, Daniel C.

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 switching component preferably in integrated circuit form is provided. The switching component has a plurality of inlet and outlet data ports with associated inlet and outlet clock ports, a clock regenerator and a flip flop for each outlet data port, and a switch matrix for coupling each inlet data port and its associated inlet clock port to any outlet data port and its associated outlet clock port. The clock regeneration means obtains the clock signal exiting the switching core and regenerates the clock signal waveshape. The flip-flop causes data exiting the switching core to be clocked out of the switching component synchronously with its associated regenerated clock signal according to …

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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 December 5, 1989 and granted May 25, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 5, 1989
GrantedMay 25, 1993
Term endedDecember 5, 2009
Patent numberCA 2004589 C
Classification (IPC)H04Q3/00 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedDec 5, 1989Patent grantedMay 25, 1993Term endedDec 5, 2009

Sources & verification

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