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:
Jan. 06, 2009
Filed:
Jan. 18, 2008
Applicants:
Min-woo Lee, Pyeongtaek-si, KR;
Hyung Suk Ahn, Seoul, KR;
Sung-min Lee, Seoul, KR;
Inventors:
Assignee:
Komico Ltd., , KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/581 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a method for preparing a high dense aluminum nitride (AlN) sintered body. The method includes the steps of preparing powders for the AlN sintered body comprising YOof 0.1 to 15 wt %, TiOof 0.01 to 5 wt % and MgO of 0.1 to 10 wt %, and obtaining the AlN sintered body with a volume resistivity of 1×10Ωcm or more at a normal temperature and a relative density of 99% or more. The sintered body is obtained by sintering the powders and then cooling the sintered powders or sintering the powders and then cooling the sintered powders with annealing the sintered powders during the cooling.