Glass for magnetic recording media substrates, magnetic recording media substrates, magnetic recording media and method for preparation thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 7, 2017
Grant Date -
Sep 17, 2015
app pub date -
Mar 23, 2015
filing date -
Mar 19, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A glass for a magnetic recording medium substrate permitting the realization of a magnetic recording medium substrate affording good chemical durability and having an extremely flat surface, a magnetic recording medium substrate comprised of this glass, a magnetic recording medium equipped with this substrate, and methods of manufacturing the same. The glass compositions disclosed comprise oxides of at least Si, Al, Li, Na, K, Sn and Ce, optionally Sb, but not comprising As or F. Additional oxides of Mg, Cs, Sr and Ba may be present. The oxides are presented as molar percentages, mass percentages and ratios thereof.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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