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Expired Canadian patentCanada

Methods and apparatus for implementing virtualization of storage within a storage area network through a virtual enclosure

CA 2472992 C · Owner: Cisco Technology, Inc. · Inventors: Kumar, Sanjaya; Burnett, John L.; Barooah, Manas

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Abstract From the Canadian patent

Methods and apparatus for implementing storage virtualization on a network device of a storage area network are disclosed. A virtual enclosure is created that has one or more virtual enclosure ports and is adapted for representing one or more virtual storage units. Each of the virtual storage units represents one or more physical storage locations on one or more physical storage units of the storage area network. Each of the virtual enclosure ports of the virtual enclosure is associated with a port of a network device within the storage area network. An address or identifier is then assigned to each of the virtual enclosure ports.

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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 23, 2002 and granted February 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2024.
  • 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 23, 2002
GrantedFebruary 19, 2013
Term endedDecember 23, 2022
Patent numberCA 2472992 C
Classification (IPC)G06F3/06 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedDec 23, 2002Patent grantedFeb 19, 2013Term endedDec 23, 2022

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