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Expired Canadian patentCanada

Apparatus and method for hardware-based file system

CA 2504322 C · Owner: Benham, Simon L. · Inventors: Barrall, Geoffrey S.; Willis, Trevor E.; Aston, Christopher J.

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Abstract From the Canadian patent

A method and apparatus are disclosed having a non-volatile storage device and a storage , processor configured to maintain in a memory for a file system, an object structure with a first , tree structure rooted by a first root node and a second tree structure rooted by a second root node. , Each tree structure optionally includes a number of intermediate nodes and data blocks. Each , tree structure represents a version of the file system object. The storage processor manages , changes to the file system object using the first tree structure rooted by the first root node while , storing the second tree structure rooted by the second root node and vice versa for a checkpoint , that is …

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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 October 30, 2003 and granted July 14, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 30, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 30, 2003
GrantedJuly 14, 2015
Term endedOctober 30, 2023
Patent numberCA 2504322 C
Classification (IPC)—

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2004200620082010201220142016201820202022Application filedOct 30, 2003Patent grantedJuly 14, 2015Term endedOct 30, 2023

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