Patent application number | Description | Published |
20080245990 | Piezoelectric Ceramic Composition - A piezoelectric ceramic composition excellent in all of the electric property Q | 10-09-2008 |
20080258100 | PIEZOELECTRIC CERAMIC COMPOSITION AND RESONATOR - To obtain a piezoelectric ceramic composition having extremely high heat resisting property. Provided is a piezoelectric ceramic composition comprising a main component represented by Pb | 10-23-2008 |
20090065731 | Method for producing piezoelectric ceramic - To provide a method for producing a piezoelectric ceramic which can improve toughness thereof. Provided is a method for producing a piezoelectric ceramic which includes a step of polarizing a piezoelectric ceramic having a main component represented by a composition formula Pb | 03-12-2009 |
20090102324 | PIEZOELECTRIC CERAMIC COMPOSITION AND OSCILLATOR - Provided is a piezoelectric ceramic composition which enables the attainment of sufficiently high Q | 04-23-2009 |
20110074516 | PIEZOELECTRIC CERAMIC COMPOSITION, PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND OSCILLATOR - A piezoelectric ceramic composition is provided which contains Perovskite oxides expressed by General Formula 1 below and an aluminum compound, and in which the content ratio of the aluminum compound to the Perovskite oxides is from 1% by mass to 11% by mass, | 03-31-2011 |
20130162108 | PIEZOELECTRIC CERAMIC AND PIEZOELECTRIC DEVICE - A piezoelectric ceramic with environmental friendliness including a composition as the main component composed of a composite oxide free from lead (Pb) as a constituent element, and with excellent piezoelectric characteristics such as the relative dielectric constant, the electromechanical coupling factor, and the piezoelectric constant, and a piezoelectric device using the piezoelectric ceramic, are provided. A piezoelectric ceramic including a composition represented by the following general formula as the main component: (K1-x-y-w-vNaxLiyBawSrv)m(Nb1-z-uTaz-Zru)O3 (wherein, x, y, z, w, v, u and m in the formula satisfy the following conditions respectively: 0.406-27-2013 | |
20140339458 | PIEZOELECTRIC CERAMIC AND PIEZOELECTRIC DEVICE CONTAINING THE SAME - A piezoelectric ceramic contains a major proportion of potassium sodium niobate and has a carbon content after firing of 55 to 1,240 ppm by mass. | 11-20-2014 |
20140339962 | PIEZOELECTRIC DEVICE - A piezoelectric device includes a first electrode film, a piezoelectric film disposed on the first electrode film, and a second electrode film disposed on the piezoelectric film. At least one of the first and second electrode films is composed of an alloy, and a main component of the alloy is a metal selected from the group consisting of Ti, Al, Mg, and Zn. The piezoelectric film has a main composition represented by (K | 11-20-2014 |