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Expired Canadian patentCanada

Optical fiber distribution shelf assembly containing a modular optical switch

CA 2212082 C · Owner: Parzygnat, William Joseph · Inventors: Parzygnat, William Joseph; Reagan, Randy Alan; Pimpinella, Richard Joseph

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

A fiber distribution shelf containing an optical switch within the confines of the shelf structure. The fiber distribution shelf is part of an optical fiber administration system where various stages of switching are used to interconnect an optical time domain reflectometer to the optical fibers that terminate on a fiber distribution shelf within a fiber administration system. By having the shelf optical switch entirely contained within the shelf structure of a fiber distribution shelf a unique, configuration is provided that greatly reduces the size and complexity of the overall fiber administration system.

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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 July 31, 1997 and granted July 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 31, 1997
GrantedJuly 16, 2002
Term endedJuly 31, 2017
Patent numberCA 2212082 C
Classification (IPC)H04Q1/14 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJuly 31, 1997Patent grantedJuly 16, 2002Term endedJuly 31, 2017

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