US 7,560,089 B2
	Anisotropically-shaped powder of an alkali metal oxide compound
Hisaaki Takao, Aichi-ken (Japan); Yasuyoshi Saito, Aichi-ken (Japan); and Toshihiko Tani, Aichi-ken (Japan)
Assigned to Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi-gun (Japan)
Filed on Dec. 11, 2003, as Appl. No. 10/732,295.
Application 10/732295 is a division of application No. 10/127762, filed on Apr. 23, 2002, granted, now 6,692,652.
Claims priority of application No. 2001-124225 (JP), filed on Apr. 23, 2001.
Prior Publication US 2004/0120881 A1, Jun. 24, 2004
Int. Cl. C04B 35/00 (2006.01)

U.S. Cl. 423—594.7  [423/594.8; 423/594.15]

7 Claims

1. An anisotropically-shaped powder with perovskite crystal structure comprising an alkali-pentavalent metal oxide compound represented by a general formula: ABO3, wherein a main ingredient for an A-site element is K and/or Na and a main ingredient for a B-site element is Nb, Sb and/or Ta, with a specific crystal plane as its developed plane, with a platelike or flaky shape, and with an average aspect ratio of 3 or more.