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:
Sep. 08, 2020
Filed:
Sep. 26, 2017
Applicant:
Tateho Chemical Industries Co., Ltd., Ako-shi, JP;
Inventors:
Assignee:
TATEHO CHEMICAL INDUSTRIES CO., LTD., Ako-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/443 (2006.01); C01F 7/16 (2006.01); C01F 5/08 (2006.01); C04B 35/626 (2006.01);
U.S. Cl.
CPC ...
C01F 7/162 (2013.01); C01F 5/08 (2013.01); C01F 7/16 (2013.01); C04B 35/443 (2013.01); C04B 35/626 (2013.01); C01P 2002/32 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/11 (2013.01); C01P 2006/90 (2013.01);
Abstract
Provided is a magnesium oxide-containing spinel powder capable of producing a ceramic sintered body having high strength and excellent strength stability. In the magnesium oxide-containing spinel powder, a 50% particle diameter (D50) is 0.30 to 10.00 μm, a ratio (D90-D50)/(D50-D10) of a difference between a 90% particle diameter (D90) and the 50% particle diameter (D50) and a difference between the 50% particle diameter (D50) and a 10% particle diameter (D10) is 1.0 to 5.0, and a composition ratio of Mg and Al in terms of an oxide equivalent content is 50 to 90% by weight of MgO and 10 to 50% by weight of AlO.