Method for forming a tree-structure file
CA 1296423 C · Owner: Sharyou, Yasuo · Inventors: Tsukahara, Miho; Sharyou, Yasuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for Forming a Tree-Structure File A method for forming a plurality of files on a recording medium is disclosed, in which in recording a, data block which is to be a recording unit such as a, file itself, a file pointer or a directory a storage, zone intended for recording an unrecorded data block having pertinence with the firstly stated data block is reserved in such a manner that the continuity or correlation among the respective files may be maintained and the retrieval of the files is facilitated without re-writing of the record contents.
Read the whole patent
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 February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2009.
- 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.