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. 09, 2008
Filed:
Aug. 04, 2006
Seiji Sarayama, Miyagi, JP;
Hirokazu Iwata, Miyagi, JP;
Akihiro Fuse, Miyagi, JP;
Kuniaki Ara, Ibaraki, JP;
Junichi Saito, Ibaraki, JP;
Seiji Sarayama, Miyagi, JP;
Hirokazu Iwata, Miyagi, JP;
Akihiro Fuse, Miyagi, JP;
Kuniaki Ara, Ibaraki, JP;
Junichi Saito, Ibaraki, JP;
Ricoh Company, Ltd., Tokyo, JP;
Japan Atomic Energy Agency, Higashiibaraki-gun, JP;
Abstract
A crystal growth apparatus comprises a reaction vessel holding a melt mixture containing an alkali metal and a group III metal in a vessel space thereof, a porous member holding a metal melt by a surface tension thereof in a path through which a vapor of the alkali metal in contact with the metal mixture in the vessel space escapes to an external space, the porous member further supplying a nitrogen source gas fed from outside thereto further to the reaction vessel therethrough and through the metal melt by a pressure difference formed between the vessel space in the reaction vessel and the external space, and a heating apparatus heating the melt mixture to a crystal growth temperature.