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:
Jul. 11, 1989
Filed:
Mar. 26, 1987
Applicant:
Inventors:
Shin'ichiro Takasu, Tokyo, JP;
Eiichi Toji, Machida, JP;
Kazumoto Homma, Sagamihara, JP;
Michihiro Ohwa, Kunitachi, JP;
Assignee:
Toshiba Ceramics Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C30B / ;
U.S. Cl.
CPC ...
422249 ; 1566171 ; 1566181 ; 1566191 ; 1566204 ; 156D / ;
Abstract
A device for growing single crystals comprising a pair of electromagnetic coils disposed opposed to each other in a symmetry with respect to a central axis of a crucible at an outer side of a heater, a diameter for said coils being greater than 0.8 times of a diameter for said heater and a distance between said coils being greater than 1.5 times of said diameter for said heater.