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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 9803291 B1

PDFFull Text
Expired
Date of Patent:
Oct. 31, 2017

Filed:

Sep. 12, 2013

Crucible for growing sapphire single crystal, and method for producing crucible for growing sapphire single crystal

Applicant:

A.l.m.t. Corp., Tokyo, JP;

Inventors:

Masahiro Katoh, Toyama, JP;

Makoto Watanabe, Toyama, JP;

Assignee:

A.L.M.T. Corp., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Robert M Kunemund

Int. Cl.
CPC ...
C30B 11/02 (2006.01); C30B 11/00 (2006.01); C30B 29/20 (2006.01); C30B 35/00 (2006.01); C23C 4/02 (2006.01); C23C 4/08 (2016.01); C23C 4/12 (2016.01); C23C 4/18 (2006.01); F27D 5/00 (2006.01);
U.S. Cl.
CPC ...
C30B 11/002 (2013.01); C23C 4/02 (2013.01); C23C 4/08 (2013.01); C23C 4/12 (2013.01); C23C 4/18 (2013.01); C30B 29/20 (2013.01); C30B 35/002 (2013.01); F27D 2005/0075 (2013.01); Y10T 117/1092 (2015.01);
Abstract

An object of this invention is to provide a crucible for growing a sapphire single crystal, which is optimized for providing a sapphire single crystal and is reusable. A crucible for growing a sapphire single crystal of this invention includes: a base material () containing molybdenum as a main component and having a crucible shape; and a coating layer () with which only an inner periphery of the base material () is coated and which is formed of tungsten and inevitable impurities, in which the coating layer () has a surface roughness Ra of 5 μm or more and 20 μm or less.

Find Patent Forward Citations

Katoh, Masahiro. (2017). Crucible for growing sapphire single crystal, and method for producing crucible for growing sapphire single crystal (U.S. Patent No. 9803291). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9803291

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

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