Perpendicular magnetic recording medium and method for producing the same
CA 1181033 A · Owner: Teijin Limited · Inventors: Naoe, Masahiko; Kadokura, Sadao; Tomie, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Magnetic recording medium conventionally utilizes the in-plane magnetization mode, but, recently the, perpendicular magnetization mode utilizing the perpendicular anisotropy of an hcp cobalt alloy layer in which C axis is, oriented normal to the layer surface is proposed. The known, perpendicular magnetic recording medium has been produced by an RF sputtering, but such medium is of too low flexibility to use it in the form of a magnetic tape. In addition the, production rate of the perpendicular magnetic recording medium by RF sputtering is very low. The perpendicular magnetic recording medium is very flexible due to particle pattern (Figs. 10 12 and 13), completely distinct from the …
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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 January 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 2002.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.