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:
Dec. 15, 2015
Filed:
Sep. 28, 2007
Applicants:
Shinichi Kawazoe, Hiratsuka, JP;
Fukuo Ogawa, Hiratsuka, JP;
Yasuhito Narushima, Hiratsuka, JP;
Tsuneaki Tomonaga, Hiratsuka, JP;
Toshimichi Kubota, Hiratsuka, JP;
Inventors:
Shinichi Kawazoe, Hiratsuka, JP;
Fukuo Ogawa, Hiratsuka, JP;
Yasuhito Narushima, Hiratsuka, JP;
Tsuneaki Tomonaga, Hiratsuka, JP;
Toshimichi Kubota, Hiratsuka, JP;
Assignee:
SUMCO TECHXIV CORPORATION, Hiratsuka-Shi, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 35/00 (2006.01); C30B 15/00 (2006.01); C30B 15/14 (2006.01); C30B 11/00 (2006.01); C30B 29/06 (2006.01);
U.S. Cl.
CPC ...
C30B 15/00 (2013.01); C30B 11/003 (2013.01); C30B 15/14 (2013.01); C30B 29/06 (2013.01); C30B 35/00 (2013.01); Y10T 117/1024 (2015.01); Y10T 117/1032 (2015.01); Y10T 117/1068 (2015.01);
Abstract
A graphite member utilized in a pulling device for pulling a silicon single crystal is provided. An edge part of the graphite member is rounded off which is exposed to a reactive gas. The graphite member may comprise: a plate part having a thickness of 't' wherein a curvature radius of 'r' satisfies the formula: t/8≦r≦t/4.