SILICA GLASS CRUCIBLE HAVING MULTILAYERED STRUCTURE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
May 6, 2010
app pub date -
Jan 9, 2009
filing date -
Oct 31, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Disclosed is a silica glass crucible employed in pulling silicon single crystals. The crucible comprises at least a transparent layer, semitransparent layer, and opaque layer disposed from the inner surface side to the outer surface side of the crucible. The content of bubbles in the transparent layer is less than 0.3 percent; the content of bubbles in the semitransparent layer falls within a range of from 0.3 to 0.6 percent; and the content of bubbles in the opaque layer is greater than 0.6 percent.
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