Storage medium initialization and cancellation method
CA 2423504 A1 · Owner: Ohbi, Seiji · Inventors: Kawakami, Takashi; Kii, Manabu; Ohbi, Seiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A storage medium initializing method includes steps of recording on a storage medium a management table configured to manage a replacement area for a defect area in a data area in the storage medium; recording a unique identification on the storage medium; and. recording management data in the data area. The step of recording a unique identification includes recording the unique identification on the storage medium, but outside an area managed by the management data. The method optional includes initialization and cancellation steps.
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
- Filed March 25, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 25, 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.
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.