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Expired Canadian patentCanada

Method of managing data in a data storage hierarchy and a data storage hierarchy therefor

CA 1312950 C · Owner: Tang, Horace Tin Sze · Inventors: Tang, Horace Tin Sze; Harding, Warren Bruce; Clark, Connie Mae

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Abstract From the Canadian patent

A method for managing data in a data storage hierarchy and a data storage hierarchy suitable therefor is disclosed. The data storage hierarchy includes an optical library and separate manually operated shelf storage. The optical library includes at least one optical disk drive and a plurality of storage cells for the storage of optical disks. The optical library also includes automatic means for transferring optical disks from the storage cells to the optical disk drives in the library. The host processor upon determining that particular data is required to be stored in the optical library, first checks to determine if the optical disks in the optical library currently have the capacity for …

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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

  • Granted January 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 27, 1989
GrantedJanuary 19, 1993
Term endedJanuary 19, 2010
Patent numberCA 1312950 C
Classification (IPC)G06F12/08 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJan 27, 1989Patent grantedJan 19, 1993Term endedJan 19, 2010

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