Method of automatically growing a single crystal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 25, 1997
Grant Date -
N/A
app pub date -
Jun 1, 1992
filing date -
Jan 26, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of automatically growing a single crystal by using a floating-zone method in which radio-frequency induction heating is utilized, wherein the shape of molten zone of a sintered rod material is judged by comparing an anode voltage in a radio-frequency oscillation tube with a radio-frequency current, or a change in the shape of molten zone is judged depending of a change in a radio-frequency current during the growth of the sintered rod material, and power for heating is controlled on the basis of the judgement.
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