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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.:

US 8771618 B1

PDFFull Text
Date of Patent:
Jul. 08, 2014

Filed:

Apr. 05, 2010

Method for producing alkali metal niobate particles, and alkali metal niobate particles

Applicants:

Atsushi Muramatsu, Sendai, JP;

Kiyoshi Kanie, Sendai, JP;

Atsuki Terabe, Iwaki, JP;

Yasuhiro Okamoto, Iwaki, JP;

Hideto Mizutani, Iwaki, JP;

Satoru Sueda, Iwaki, JP;

Hirofumi Takahashi, Fuji, JP;

Inventors:

Atsushi Muramatsu, Sendai, JP;

Kiyoshi Kanie, Sendai, JP;

Atsuki Terabe, Iwaki, JP;

Yasuhiro Okamoto, Iwaki, JP;

Hideto Mizutani, Iwaki, JP;

Satoru Sueda, Iwaki, JP;

Hirofumi Takahashi, Fuji, JP;

Assignees:

Sakai Chemical Industry Co., Ltd., Osaka, JP;

TOHOKU University, Miyagi, JP;

Fuji Ceramics Corporation, Shizuoka, JP;

Attorney:

Hamre, Schumann, Mueller & Larson, P.C.

Primary Examiner:

Holly Le

Int. Cl.
CPC ...
C01B 13/36 (2006.01); C01G 1/02 (2006.01); C01D 13/00 (2006.01); C01D 1/02 (2006.01); C01G 33/00 (2006.01);
U.S. Cl.
CPC ...
C01G 1/02 (2013.01); C01G 33/00 (2013.01); C01D 1/02 (2013.01); C01D 13/00 (2013.01);
Abstract

Disclosed are a method of producing fine particulate alkali metal niobate in a liquid phase system, wherein the size and shape of the particulate alkali metal niobate can be controlled; and fine particulate alkali metal niobate having a controlled shape and size. One of specifically disclosed is a method of producing a substantially rectangular cuboid particulate alkali metal niobate represented by MNbO(1), wherein M represents one element selected from alkaline metals, including specific four steps. Another one of specifically disclosed is particulate alkali metal niobate represented by the formula (1) having a substantially rectangular cuboid shape, wherein the substantially rectangular cuboid shape has a longest side and a shortest side, the length of the longest side represented by an index Lis 0.10 to 25 μm, and the length of the shortest side represented by an index Lis 0.050 to 15 μm.

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