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:
Nov. 26, 2013
Filed:
Sep. 15, 2009
Applicants:
Takashi Hasegawa, Omihachiman, JP;
Yasunari Nakamura, Yasu-gun, JP;
Kazunari Okada, Echi-gun, JP;
Inventors:
Assignee:
Murata Manufacturing Co., Ltd., Nagaokakyo-Shi, Kyoto-fu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01F 3/12 (2006.01); C01F 17/00 (2006.01); C04B 35/468 (2006.01); C04B 35/50 (2006.01); B01J 23/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A particulate subcomponent for a barium titanate dielectric is obtained from a sol in which a rare earth metal compound is dispersed in water. The rare earth metal compound includes a carboxylic acid having at least three carbonyl groups and at least one rare earth metal which can be Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu so that the molar ratio (carbonyl group/rare earth metal) is in the range of 1.2 to 3. A method of making the sol and a method of using the sol to make a ceramic powder is described.