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:
Sep. 05, 2006
Filed:
Jul. 16, 2003
Tatsuhiko Nonoyama, Chiryu, JP;
Toshiatsu Nagaya, Kuwana, JP;
Yasuyoshi Saito, Toyota, JP;
Kazumasa Takatori, Nagoya, JP;
Hisaaki Takao, Seto, JP;
Takahiko Homma, Owariasahi, JP;
Tatsuhiko Nonoyama, Chiryu, JP;
Toshiatsu Nagaya, Kuwana, JP;
Yasuyoshi Saito, Toyota, JP;
Kazumasa Takatori, Nagoya, JP;
Hisaaki Takao, Seto, JP;
Takahiko Homma, Owariasahi, JP;
DENSO Corporation, Kariya, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi-gun, JP;
Abstract
A piezoelectric ceramic composition not containing lead, able to be sintered at ordinary pressure, and superior to the past in at least one of the properties unique to piezoelectric ceramic compositions such as the piezoelectric dconstant, that is, a piezoelectric ceramic composition having a compound of a general formula {Li(KNa)}(NbTaSb)Owhere x, y, z, and w are in the ranges of 0≦x≦0.2, 0≦y≦1, 0<z≦0.4, and 0<w≦0.2 as a main ingredient, where the piezoelectric ceramic composition contains at least one metal element selected from (1) palladium, silver, gold, ruthenium, rhodium, rhenium, osmium, iridium, and platinum, (2) nickel, iron, manganese, copper, and zinc, or (3) magnesium, calcium, strontium, and barium as an added element, and a method of production of the same and a piezoelectric element and dielectric element utilizing that piezoelectric ceramic composition.