Magnetic recording structure
CA 1091347 A · Owner: Dai Nippon Insatsu Kabushiki Kaisha · Inventors: Nishikawa, Seiichi; Honda, Makoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic recording structure comprises 1) a substrate having an outer surface, and 2) a laminar magnetic recording piece disposed at at least one part of the outer surface of the substrate, the recording piece comprising a magnetic layer, a color layer and a non-magnetic metal deposition layer interposed between the magnetic layer and the color layer, the magnetic layer being closer to the substrate than the color layer. The non-magnetic metal deposition layer disposed on the magnetic layer has high hiding power and even in the, form of an extremely thin layer can effectively hide the, color of the magnetic material. Accordingly this magnetic recording structure can, be produced with a …
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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
- Granted December 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 1997.
- 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.