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. 19, 1995
Filed:
Mar. 18, 1994
Hitoshi Sasaki, Tsukuba-shi, Ibaragi-ken, 305, JP;
Eiji Tokizaki, Ibaragi, JP;
Kazutaka Terashima, Ebina-shi, Kawagawa-ken, 243-04, JP;
Akira Nagashima, Tokyo, JP;
Shigeyuki Kimura, Ibaragi, JP;
Research Development Corporation of Japan, Tokyo, JP;
Other;
Abstract
The density of a melt precisely represents the stability of the melt, so that the initiation of pulling-up operation can be determined on the basis of the changing rate of the density. The pulling-up operation may be started when the density becomes constant, or when the changing rate of the density with respect to the temperature becomes smaller. Since the melt or clusters do not include different minute structures, an obtained single crystal is of high quality free from minute faults or dislocations.