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:
Aug. 25, 2015
Filed:
Dec. 14, 2010
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 ...
C03B 19/06 (2006.01); C03B 19/09 (2006.01); C03C 15/00 (2006.01); C03C 23/00 (2006.01); C30B 15/10 (2006.01); C30B 29/06 (2006.01); C30B 35/00 (2006.01); C03C 17/23 (2006.01);
U.S. Cl.
CPC ...
C03B 19/095 (2013.01); C03C 15/00 (2013.01); C03C 17/23 (2013.01); C03C 23/007 (2013.01); C03C 23/0025 (2013.01); C30B 15/10 (2013.01); C30B 29/06 (2013.01); C30B 35/002 (2013.01); C03C 2218/345 (2013.01); Y10T 117/1032 (2015.01);
Abstract
Provided is a method of manufacturing a vitreous silica crucible for pulling a silicon single crystal which can suppress melt surface vibration of silicon melt filled therein and has a long lifetime. The crucible includes a peripheral wall portion, a curved portion and a bottom portion, and has a plurality of micro recesses on the specific region of the inner surface of the peripheral wall portion.