The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2016
Filed:
May. 13, 2011
Applicants:
Toshiaki Sudo, Akita, JP;
Hiroshi Kishi, Akita, JP;
Eriko Suzuki, Akita, JP;
Inventors:
Assignee:
SUMCO CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 15/02 (2006.01); C03B 19/09 (2006.01); C30B 11/00 (2006.01); C30B 29/06 (2006.01); C30B 35/00 (2006.01);
U.S. Cl.
CPC ...
C03B 19/095 (2013.01); C30B 11/002 (2013.01); C30B 29/06 (2013.01); C30B 35/002 (2013.01); Y02P 40/57 (2015.11); Y10T 117/1032 (2015.01);
Abstract
Provided is a vitreous silica crucible for pulling a silicon single crystal, which stably suppresses surface vibration of a silicon melted solution filled therein and has a long life, and a method for manufacturing the same. The vitreous silica crucible for pulling a silicon single crystal includes a peripheral wall portion, a curved portion, and a bottom portion, wherein a plurality of minute concave portions are formed on a certain area of an inner surface of the peripheral wall portion, and a plurality of bubbles are formed on a lower position of the minute concave portions.