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:
Sep. 15, 2015
Filed:
Aug. 20, 2010
Toshiaki Sudo, Akita, JP;
Takuma Yoshioka, Akita, JP;
Hiroshi Kishi, Akita, JP;
Takeshi Fujita, Akita, JP;
Minoru Kanda, Akita, JP;
Koichi Suzuki, Akita, JP;
Ken Kitahara, Akita, JP;
Toshiaki Sudo, Akita, JP;
Takuma Yoshioka, Akita, JP;
Hiroshi Kishi, Akita, JP;
Takeshi Fujita, Akita, JP;
Minoru Kanda, Akita, JP;
Koichi Suzuki, Akita, JP;
Ken Kitahara, Akita, JP;
SUMCO CORPORATION, Tokyo, JP;
Abstract
The purpose of the present invention is to provide a crucible which has high viscosity at high temperature, and can be used for a long time, and can be manufactured at low cost, and a method of manufacturing the same. The composite crucibleis characterized in the use of mullite (3AlO.2SiO) as the basic material of the crucible. The composite cruciblehas the crucible bodymade of mullite material whose main component is alumina and silica, and a transparent vitreous silica layerformed on the inner surface of the crucible body. The thickness of the transparent vitreous silica layeris smaller than that of the crucible body. The crucible bodycan be formed by the slip casting method, and the transparent vitreous silica layercan be formed by the thermal spraying method.