Magnetic recording medium and manufacturing method therefor
CA 2569005 C · Owner: Yamazaki, Yoshikazu · Inventors: Yano, Daisuke; Yamazaki, Yoshikazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A card-like magnetic recording medium comprising a non-magnetic substrate and a laminate containing a magnetic recording layer wherein the laminate is placed in at, least a portion of the non-magnetic substrate; wherein the laminate comprises a light, reflection quantity controlling layer which includes a binder resin and at , least one of a scale-like metal powder and fine flakes obtained from a metallic thin film and is formed, on the magnetic recording layer and further comprises a glistening coating layer which, includes glistening particles and is formed on the light reflection quantity controlling, layer; and the maximum reflectance of diffuse reflection light with respect to …
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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 May 27, 2005 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 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.