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:
Apr. 20, 1976
Filed:
Jan. 11, 1974
Applicant:
Inventors:
Kazumasa Takagi, Kokubunji, JA;
Tokuumi Fukazawa, Tachikawa, JA;
Mitsuru Ishii, Higashiyamato, JA;
Seigo Kishino, Hachioji, JA;
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
156617 ; 2330 / ; 2327 / ; 423263 ;
Abstract
In growing single crystals of gadolinium gallium garnet, dysprosium gallium garnet and the like according to the Czochralski method, when the velocity of rotation of the crystal during growth of a slender part is made lower than the velocity of rotation of the crystal during growth of a body portion, single crystals free of defects such as dislocation or facet can be obtained.