Chemistry of inorganic compounds – Boron or compound thereof – Binary compound
Reexamination Certificate
2005-09-23
2010-10-19
King, Roy (Department: 1793)
Chemistry of inorganic compounds
Boron or compound thereof
Binary compound
Reexamination Certificate
active
07815882
ABSTRACT:
In a refining method for boron-containing silicon, boron-containing silicon is irradiated with an electron beam in a vacuum vessel to melt the boron-containing silicon. A boron compound-forming substance is introduced into the vacuum vessel, and boron contained in the molten silicon is formed into a boron compound. After at least a portion of the boron compound has vaporized, irradiation with the electron beam is stopped. The high-purity molten silicon can then be solidified.
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Maeda Masafumi
Shimada Takehiko
Yamauchi Norichika
IIS Materials Corporation, Ltd.
King Roy
Takeuchi Yoshitoshi
Tobias Michael
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