Magnetic recording member
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 3, 1991
Grant Date -
N/A
app pub date -
Sep 29, 1989
filing date -
Dec 6, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic recording member having high coercive force, comprising: (a) a non-magnetic substrate; (b) a Cr base film formed on said substrate by a film forming process; and (c) a Co alloy film formed on said Cr base film by the same film forming process as in (b), wherein said Cr base film contains in addition to Cr at least one additional element selected from the group consisting of rare earth elements, Si, Cu, P and Ge, and wherein said Co alloy film is formed by continuous operation of said film forming process without interruption after completion of the formation of said Cr base film.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully