Management apparatus for volume-medium correspondence information for use in dual file system
CA 2112421 C · Owner: Nec Corporation · Inventors: Ikeda, Akio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A management apparatus for volume-medium correspondence information for use in a dual file system is disclosed. The apparatus has a volume-medium correspondence information management table for storing and managing volume-medium correspondence information during the operation of the dual file system. A volume-medium correspondence information storage file stores after a stop of the dual file system, volume-medium correspondence information which was in the volume-medium correspondence information management table immediately before that system stop. The volume-medium correspondence information is updated in the volume-medium correspondence information management table when the media …
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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 24, 1993 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.