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. 31, 1990
Filed:
Jul. 07, 1988
Kohji Tada, Osaka, JP;
Toshihiro Kotani, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
In a process for pulling a crystal such as Si, Ge, GaAs, InP, GaP, InAs, AlAs, CdTe, CdSe, ZnTe, HgTe, MnTe, Gd.sub.3 Ga.sub.5 O.sub.12, Bi.sub.12 SiO.sub.20 and LiNbO.sub.3 from a raw material melt within a baffle plate whose bore diameter is gradually increased upward and which is arranged in such a manner that the melt inside and outside the baffle plate is in communication with each other through the small opening part at the end thereof, the baffle plate is moved relatively to the surface of the melt so as to increase the diameter of the melt surface inside the baffle plate with the increase of the diameter of the pulled crystal at the solid-liquid interface.