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. 19, 2025
Filed:
Jul. 02, 2021
Shin-etsu Quartz Products Co., Ltd., Tokyo, JP;
Kazuki Tomokuni, Echizen, JP;
Yoshinori Ikeda, Echizen, JP;
SHIN-ETSU QUARTZ PRODUCTS CO., LTD., Tokyo, JP;
Abstract
A CZ crucible for growing a single crystal silicon ingot by a CZ method, where the CZ crucible includes a closed-end cylindrical graphite crucible and a closed-end cylindrical quartz glass crucible disposed inside the graphite crucible, and the CZ crucible includes a gap between an inner surface of a bottom portion of the graphite crucible and an outer surface of a bottom portion of the quartz glass crucible on a central axis of the CZ crucible, the gap keeping the inner surface of the bottom portion of the graphite crucible and the outer surface of the bottom portion of the quartz glass crucible contactless with each other. This provides a CZ crucible that ensures that a closed-end cylindrical quartz glass crucible for growing a single crystal silicon ingot by a CZ method can be stable and self-supporting when disposed inside a closed-end cylindrical graphite crucible.