Recording medium with physical access control (pac) information thereon and apparatus and methods for forming, recording, and reproducing the recording medium
CA 2558895 C · Owner: Lg Electronics Inc. · Inventors: Park, Yong Cheol
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A recording medium, such as a high-density and/or optical recording medium including physical access control (PAC) information recorded thereon and , apparatus and methods for recording to and reproducing from the recording medium, in order to improve data protection data management and/or , reproduction compatibility.
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 December 30, 2004 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 30, 2024.
- 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.