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, 2026
Filed:
Feb. 09, 2022
Sumco Corporation, Tokyo, JP;
Masami Ohara, Akita, JP;
Hiroshi Kishi, Akita, JP;
Eriko Kitahara, Akita, JP;
Hideki Fujiwara, Tokyo, JP;
SUMCO CORPORATION, Tokyo, JP;
Abstract
A quartz glass crucible includes a crucible base body including silica glass and a coating film containing a crystallization accelerator and formed on the inner surface of the crucible base body. The average carbon concentration in the coating film, and the crucible base body within a range of 0 μm or more and 300 μm or less in depth from the inner surface of the crucible base body is 1.0×10atoms/cc or more and 3.0×10atoms/cc or less.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile