Information recording medium
CA 1267470 C · Owner: Naito, Mitsuo · Inventors: Naito, Mitsuo; Kiyomiya, Tadashi; Sasaoka, Tatsuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical information record medium comprising a transparent substrate, an optical information recording layer and a, reflective metal layer. The reflective metal layer is formed of an aluminum-titanium alloy in which the titanium content is between 0.1 and 10 weight %. The medium has improved stability against corrosion due to the improved reflective metal layer.
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
- Granted April 3, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2007.
- 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.