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:
Mar. 02, 2010
Filed:
Sep. 12, 2008
Applicants:
Takayuki Ide, Fukuoka, JP;
Masakatsu Kiyohara, Fukuoka, JP;
Masami Ando, Fukuoka, JP;
Inventors:
Assignee:
Toto Ltd., Fukuoka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rare-earth oxide sintered body, or corrosion-resistant material, having low sintering temperature and high density is prepared by adding a boron compound at a ratio of 0.06 mol % or more and less than 25 mol % when converted into boron oxide (BO) to oxide powder of at least one of La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, and Sc, after which the mixed powder is formed and sintered. The sintered body comprises at least one of LaO, NdO, SmO, EuO, GdO, DyO, HoO, ErO, TmO, YbO, LuO, and ScO, and at least one of LnBO(Ln=La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Lu), and ScBOas a main constituent crystal thereof.