Information recording medium
CA 2503584 C · Owner: Lee, Kyung-Geun · Inventors: Lee, Kyung-Geun; Ko, Jung-Wan; Hwang, Wook-Yeon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An information recording medium includes a lead-in area a user data area, and a lead- out area and at least one of the lead-in area or the lead-out area includes a compatibility information area in which compatibility information specifying whether each area on the information recording medium is recordable and/or reproducible is recorded. The compatibility information may include at least one of state information on whether the user data area is recordable and/or reproducible state information on whether the lead-in/lead- out area is recordable and/or reproducible state information on whether the compatibility information area is recordable and/or reproducible or state information on …
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 April 5, 2005 and granted December 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.