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:
Jul. 28, 2015
Filed:
Nov. 24, 2010
Tomoaki Karaki, Imizu, JP;
Fan Zhang, Heping District, CN;
Tomoaki Karaki, Imizu, JP;
Fan Zhang, Heping District, CN;
TOYAMA PREFECTURE, Toyama, JP;
HITACHI METALS, LTD., Tokyo, JP;
Abstract
There is provided an anisotropically shaped powder preferred as plate-like crystals used in the process of producing niobate-based KNbO—NaNbO—LiNbO-based crystal-oriented ceramics and the like, and a method for producing the same. The production method includes, an oxide powder, such as NbO, and a surfactant are added to an aqueous solution of alkali hydroxides, such as NaOH and KOH to perform hydrothermal synthesis, the product obtained after this reaction is washed with an organic solvent, and further, the product after the washing is fired at 170° C. to 700° C. In addition, according to this production method, it is possible to obtain an anisotropically shaped powder having a ratio of an average particle length in a major axis direction to an average particle length in a thickness direction in the range of 2 to 20 and having a pseudo-cubic perovskite structure in which a crystal face is oriented in a (100) plane.