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. 24, 2006
Filed:
Oct. 03, 2003
Toshiaki Asahi, Toda, JP;
Kenji Sato, Toda, JP;
Takayuki Yabe, Toda, JP;
Atsutoshi Arakawa, Kitaibaraki, JP;
Toshiaki Asahi, Toda, JP;
Kenji Sato, Toda, JP;
Takayuki Yabe, Toda, JP;
Atsutoshi Arakawa, Kitaibaraki, JP;
Nikko Materials Co., Ltd., Tokyo, JP;
Abstract
In a production method for producing a compound semiconductor single crystal by LEC method using a crystal growth apparatus with a double crucible structure, it was made to grow up a crystal by covering the second crucible with a plate-like member having a pass-through slot for being capable of introducing a crystal pulling-up shaft having a seed crystal holding part at a tip into the second crucible and creating a state where an atmosphere within the second crucible scarcely changes (a semi-sealed structure).