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:
Oct. 31, 2017
Filed:
Sep. 12, 2013
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:
Primary Examiner:
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.