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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.:

US 9212431 B1

PDFFull Text
Date of Patent:
Dec. 15, 2015

Filed:

Sep. 28, 2007

Silicon single crystal pulling device and graphite member used therein

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:

Alston & Bird LLP

Primary Examiner:

Matthew Song

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.

Find Patent Forward Citations

Kawazoe, Shinichi. (2015). Silicon single crystal pulling device and graphite member used therein (U.S. Patent No. 9212431). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9212431

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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