Non-volatile storage device and control method thereof
CA 2474739 A1 · Owner: Honda, Toshiyuki · Inventors: Honda, Toshiyuki; Sakai, Keisuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A memory card (100) includes: a flash memory (120) having a plurality of physical blocks (122) consisting of a plurality of pages for storing data and a page register (121) for holding data to be written into the pages and a , controller (110) which references upon data rewrite, a valid block table (114) indicating whether a physical block (122) contains valid data specifies , an invalid block, erases it and transfer data to be written to the page register (121) while executing the erase.
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 February 7, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 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.