Apparatus and method for manufacturing pre-formatted linear optical data storage medium
CA 2553811 C · Owner: Slafer, W. Dennis · Inventors: Slafer, W. Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for manufacturing pre-formatted linear optical data storage media including an elongated linear polymer layer. The apparatus includes a drum mounted for rotation about a rotation axis and the drum includes a , circumferential outer surface having a predetermined pattern of protrusions for embossing at least one pattern of optically readable embossments in the elongated linear polymer layer as the layer is rolled on the drum. The apparatus also includes a thermal radiation source positioned adjacent the drum for heating the embossments of the elongated linear polymer layer prior to the layer being removed from the protrusions of the outer surface of the drum.
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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 January 21, 2005 and granted September 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 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.