Vitreous silica crucible
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 25, 2015
Grant Date -
Oct 18, 2012
app pub date -
Dec 13, 2010
filing date -
Dec 11, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided is a vitreous silica crucible which has a special region for suppressing vibration of melt surface during pulling of a silicon single crystal and at the same time, a marking capable of accurately monitoring a changed position of the melt surface when passing through the special region. The special region for preventing sloshing of silicon melt is provided on an inner wall of a straight body portion, and the marking is provided at least at an upper end and a lower end of the special region.
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