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:
Jun. 19, 2012
Filed:
Feb. 19, 2009
Applicants:
Ho-yong Lee, Seoul, KR;
Jong-bong Lee, Chunan, KR;
Tae-moo Hur, Asan, KR;
Dong-ho Kim, Seoul, KR;
Inventors:
Assignee:
Ceracomp Co., Ltd., Asan, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 15/14 (2006.01); C30B 1/00 (2006.01); C30B 3/00 (2006.01); C30B 5/00 (2006.01); C30B 28/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
By controlling the average size of matrix grains of polycrystalline bodies to more than a critical size at which an abnormal, exaggerated or discontinuous grain growth ends, and less than twice the critical size, large single crystals enough for practical use may be made even without occurring abnormal grain growth in polycrystalline bodies only through a heat treatment process without using a melting process and a special apparatus, thereby allowing the mass production of the large single crystals at low costs with high reproduction possibility.