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Expired Canadian patentCanada

Methods and apparatus for storage and retrieval of name space information in a distributed computing system

CA 2172644 C · Owner: At&T Ipm Corp. · Inventors: Winterbottom, Philip Steven

CIPO record

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Abstract From the Canadian patent

A distributed computing environment is disclosed which allows a user at one location to access resources at other locations. Each resource in the distributed computing environment is represented as a hierarchical file system. A user or process has a name space comprised of at least one hierarchical file system provided by a connected resource. The distributed computing environment allows a first processor to invoke execution of a processing task by a remote processor. The first processor transmits a representation of its current name space to the remote processor. The remote processor will execute the processing task on a name space modified in accordance with the name space representation …

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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 March 26, 1996 and granted May 15, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 26, 1996
GrantedMay 15, 2001
Term endedMarch 26, 2016
Patent numberCA 2172644 C
Classification (IPC)G06F15/16 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedMarch 26, 1996Patent grantedMay 15, 2001Term endedMarch 26, 2016

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