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:
Feb. 23, 2016
Filed:
Dec. 22, 2011
Applicants:
Toshiaki Sudo, Akita, JP;
Ken Kitahara, Akita, JP;
Takuma Yoshioka, Akita, JP;
Inventors:
Assignee:
SUMCO CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B 19/06 (2006.01); C03B 19/09 (2006.01); C30B 15/10 (2006.01); C30B 29/06 (2006.01); C30B 35/00 (2006.01);
U.S. Cl.
CPC ...
C03B 19/095 (2013.01); C30B 15/10 (2013.01); C30B 29/06 (2013.01); C30B 35/002 (2013.01); Y10T 117/10 (2015.01);
Abstract
The purpose of the present invention is to provide a crucible which has high viscosity at high temperature, can be used for a long time, and can be manufactured at low cost, and a method of manufacturing the crucible. The present invention provides a composite crucible including a vitreous silica crucible body having a sidewall portion and a bottom portion, and a reinforcement layer provided on an outer surface side of an upper end portion of the vitreous silica crucible body, wherein the reinforcement layer is made of mullite material whose main component is alumina and silica.