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:
Jan. 06, 2009
Filed:
Mar. 09, 2006
Applicant:
Yoshiaki Hagi, Itami, JP;
Inventor:
Yoshiaki Hagi, Itami, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 35/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A crystal growth crucible made of boron nitride includes a cylindrical tip portion for accommodating a seed crystal, and a cylindrical straight-body portion for growing a crystal, which is formed above the tip portion and has a diameter larger than that of the tip portion. Thickness Tof the tip portion and thickness Tof the straight-body portion satisfy a condition of 0.1 mm≦T<T≦5 mm, and inside diameter Dand length Lof the straight-body portion satisfy conditions of 100 mm<Dand 2<L/D<5.