Disk data storage media with edge track data surface
CA 2476408 A1 · Owner: Ferguson, Gary W. · Inventors: Ferguson, Gary W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to disk data storage media including magnetic magneto-optical and optical media such as CD-ROM CD-RW, DVD, DVD-RAM, Mini-, disks and other disk media. It provides for new disk media featuring a data storage surface on the edge of the disk. This novel edge track data surface may be marked, inscribed or recorded during manufacture or this new data surface may be created and utilized later. In addition methods to , manufacture, exploit and convert conventional disk media to that having an edge track data surface are taught herein.
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.