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| Number | Title | Issue Date |
| 8187488 | Electret composite with deep trapping centers on the interphase boundary An electret composite comprising a polymer matrix material that contains particles of a piezoelectric material with deep trapping centers on the interphase boundaries between the matrix and particles of a piezoelectric material. The piezoelectric material may have a... | 05/29/2012 |
| 8177995 | Perovskite oxide, process for producing the perovskite oxide, and piezoelectric device A process for producing a piezoelectric oxide having a composition (Ba, Bi, A)(Ti, Fe, M)O3, where each of A and M represents one or more metal elements. The composition is determined so as to satisfy the conditions (1) and (2), 0.98≦TF(P)≦1... | 05/15/2012 |
| 8128834 | Piezoelectric/electrostrictive porcelain composition and piezoelectric/electrostrictive element A (Li, Na, K)(Nb, Ta)O3 based piezoelectric/electrostrictive porcelain composition obtained by adding a slight amount of a Mn compound to a perovskite type oxide containing Li, Na and K as A-site elements and contains at least Nb out of Nb and Ta as B-sit... | 03/06/2012 |
| 8119023 | Piezoelectric/electrostrictive ceramic composition manufacturing method A (Li, Na, K)(Nb, Ta)O3-based piezoelectric/electrostrictive ceramic composition having a large field-induced distortion during application of a high electric field is provided. After synthesizing a perovskite oxide containing Li (lithium), Na (sodium) an... | 02/21/2012 |
| 8119022 | Piezoelectric single crystal and method of production of same, piezoelectric element, and dielectric element A piezoelectric single crystal and piezoelectric and dielectric application parts using the same are provided, which have all of high dielectric constant K3T, high piezoelectric constants (d33 and k33), high phase transiti... | 02/21/2012 |
| 8114307 | Piezoelectric body and liquid discharge head The present invention provides a piezoelectric element and having a piezoelectric body and a pair of electrodes being contact with the piezoelectric body, wherein the piezoelectric body consists of an ABO3 perovskite oxide in which an A-site atom consists... | 02/14/2012 |
| 7985348 | Piezoelectric ceramic composition A piezoelectric ceramic composition having a large piezoelectric constant (d) and as well having a large Qm value is to be provided. The piezoelectric ceramic composition aimed at has a composition corresponding to a solid solution containing a first compound posses... | 07/26/2011 |
| 7972527 | Method of making ternary piezoelectric crystals A ternary single crystal relaxor piezoelectric grown from a novel melt using the Vertical Bridgeman method. The ternary single crystals are characterized by a Curie temperature, Tc, of at least 150° C. and a rhombohedral to tetragonal phase transition te... | 07/05/2011 |
| 7959823 | Piezoelectric ceramic composition and piezoelectric ceramic A piezoelectric ceramic composition including potassium-sodium-lithium niobate, bismuth-sodium titanate and bismuth ferrate is provided. A piezoelectric ceramic obtained by firing the piezoelectric ceramic composition, wherein the electromechanical coupling factor i... | 06/14/2011 |
| 7947192 | Gallate single crystal, process for producing the same, piezoelectric device for high-temperature use and piezoelectric sensor for high-temperature use A material for high-temperature region piezoelectric device that can be used at a high temperature zone exceeding 400 DEG C, having a resistivity whose temperature dependence is slight. The material is characterized by having a composition selected from the group co... | 05/24/2011 |
| 7931821 | Oxynitride piezoelectric material and method of producing the same An oxynitride piezoelectric material, which exhibits ferroelectricity and has good piezoelectric properties, and a method of producing the oxynitride piezoelectric material. The oxynitride piezoelectric material includes a tetragonal perovskite-type oxynitride repre... | 04/26/2011 |
| 7910016 | Piezoelectric ceramic composition and piezoelectric ceramic electronic component A main component has a general formula of {(1−x)(K1-a-bNaaLib)m(Nb1-c-dTacSbd)O3−x(M10.5Bi0.5)nM2O3} (wherein M1 is Ca, Sr or Ba, ... | 03/22/2011 |
| 7901590 | Piezoelectric ceramic composition A piezoelectric ceramic composition that acquires excellent piezoelectric properties even when it is fired at a low temperature is offered. The piezoelectric ceramic composition possesses a composition corresponding to a solid solution that contains a first compound... | 03/08/2011 |
| 7803282 | Piezoelectric/electrostrictive body, manufacturing method of the same, and piezoelectric/electrostrictive element There is disclosed a piezoelectric/electrostrictive body in which a polarization direction of a domain indicates reversible conversion in an electric field and a strain ratio increases, a manufacturing method of the same, and a piezoelectric/electrostrictive element... | 09/28/2010 |
| 7754095 | Piezoelectric ceramic composition and piezoelectric ceramic electronic component A main component has a general formula of {(1−x)(K1−a−bNaaLib)m(Nb1−c−dTacSbd)O3−x(M10.5Bi0.5)nM2O3} (wherein M1 is Ca, Sr... | 07/13/2010 |
| 7744773 | Freestanding films with electric field-enhanced piezoelectric coefficients A method to produce low-temperature sinterable powders which are then subsequently used to fabricate freestanding piezoelectric films with very large electric-field-enhanced piezoelectric response is provided. The −d31 coefficient for PMN-PT layers can ... | 06/29/2010 |
| 7691286 | Piezoelectric ceramic composition, method for manufacturing the same, and piezoelectric ceramic electronic component A piezoelectric ceramic composition includes a primary component represented by the formula (1-x)(K1-a-bNaaLib)m(Nb1-c-dTacSbd)O3-xM1nM2O3, and 0.1 to 10 mo... | 04/06/2010 |
| 7618551 | Piezoelectric ceramic and method of manufacturing the same Piezoelectric performance is improved in a piezoelectric ceramic having a perovskite-type crystal structure expressed by a general formula ABO3 and the B-site element including niobium. The piezoelectric ceramic has a perovskite-type crystal structure in ... | 11/17/2009 |
| 7591961 | Translucent piezoelectric glass ceramic A translucent piezoelectric glass ceramic is disclosed. The glass ceramic is prepared from a precursor glass by a ceraming process, using a temperature gradient to effect the precipitation of non-ferroelectric piezo-active crystallites from the precursor glass with ... | 09/22/2009 |
| 7585429 | Piezoelectric ceramic composition A piezoelectric ceramic composition represented by the formula (1-x) (K1-a-bNaaLib)m(Nb1-c-dTacSbd)O3-x(K1/4Na1/4M31/2) M4O3, wherein ... | 09/08/2009 |
| 7560042 | Ferroelectric thin film and device including the same A composition for forming a ferroelectric thin film includes: a PZT sol-gel solution including at least one of: a whole or partial hydrolysate of a lead precursor and a whole or partial hydrolyzed and polycondensated product thereof; a whole or partial hydrolysate o... | 07/14/2009 |
| 7510669 | Piezoelectric ceramic composition and piezoelectric component A piezoelectric ceramic composition includes a bismuth layer compound containing at least Sr, Bi and Nb, e.g., (Sr0.9Nd0.1)Bi2Nb2O9, as a main component and 2 parts by weight or less (excluding 0 part by weight)... | 03/31/2009 |
| 7494601 | Piezoelectric ceramic composition and the method for preparing the same The present invention provides a piezoelectric ceramic composition, especially a lead-free piezoelectric ceramic composition, with a suitable amount of CeO2 or CeO2-containing complex additives, which is represented by the following formula: | 02/24/2009 |
| 7468143 | Piezoelectric ceramic composition and piezoelectric element The piezoelectric ceramic composition of the present invention contains a main component represented by general formula {(1-n)(Ag1-xLix)m(Nb1-yTay)O3-n(M1,M2)M3M3O3} or {(1-n)(Ag1-x | 12/23/2008 |
| 7390426 | Piezoelectric ceramic The present invention has an object to provide piezoelectric ceramics containing no lead, having a high Curie point, and further, having excellent piezoelectric properties, particularly large Qmax. The piezoelectric ceramics contain, as a main component, a bismuth l... | 06/24/2008 |
| 7309450 | Piezoelectric porcelain and method for preparation thereof Provided is a piezoelectric ceramic with a wider operating temperature range capable of obtaining a larger amount of displacement and being easily sintered, as well as being superior in terms of ultra-low emission, environmental friendliness and ecology. A piezoelec... | 12/18/2007 |
| 7267783 | Piezoelectric ceramic composition, its production method, and piezoelectric device and dielectric device This invention provides a piezoelectric ceramic composition that does not contain lead, can be sintered at a normal pressure and is excellent in at least one of a piezoelectric constant, an electro-mechanical coupling coefficient, a dielectric loss, a relative diele... | 09/11/2007 |
| 7150838 | Piezoelectric ceramic composition, its production method and piezoelectric device This invention provides a piezoelectric ceramic composition that does not contain lead, can be sintered at a normal pressure and has a high electro-mechanical coupling coefficient and a small dielectric loss, its production method, and a piezoelectric device utilizi... | 12/19/2006 |
| 7101491 | Piezoelectric ceramic composition and method of production of same, piezoelectric element, and dielectric element 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 d31 constant, that is, a p... | 09/05/2006 |
| 7090785 | Electromechanical actuators A perovskite compound of the formula, (Na1/2Bi1/2)1-xMx(Ti1-yM′y)O3±z, where M is one or more of Ca, Sr, Ba, Pb, Y, La, Pr, Nd, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb and Lu; and M′ is one... | 08/15/2006 |
| 7087186 | Ferroelectric/paraelectric materials, and phase shifter devices, true time delay devices and the like containing same Single-phase, non-cubic and single-phase, cubic ferroelectric/paraelectric perovskite-structured materials having reasonably low and fairly temperature insensitive dielectric constants (stable dielectric constants over a wide range of operating temperatures of −80... | 08/08/2006 |
| 7033521 | Piezoelectric actuator, ink jet head, and discharge apparatus A piezoelectric actuator includes: a buffer layer that is composed of an oxide or a nitride epitaxially formed on a Si substrate; a bottom electrode formed on the buffer layer, being composed of a transition metal oxide, and having a pseudo-cubic (100) or (111) orie... | 04/25/2006 |
| 7029598 | Composite material for piezoelectric transduction A composite material for piezoelectric transduction which exhibits a sufficient piezoelectricity, can be suitably utilized in various fields as a damping material and the like, and can be suitably utilized in the fields that require heat resistance. The composite ma... | 04/18/2006 |
| 6887397 | Piezoelectric/electrostrictive material and process for production thereof A piezoelectric/electrostrictive material is made of a BaTiO3-based porcelain composed mainly of BaTiO3, and a strain (S4000) of transversal direction is 650×10−6 or more in an electric field of 4,000 V/mm. This porcela... | 05/03/2005 |
| 6884364 | Lead-free piezoelectric ceramic composition wherin Cu is contained in (KxA1-x)y(Nb1-zBz)O3perovskite compound, and process of preparing the same A lead-free piezoelectric ceramic composition wherein a suitable amount of Cu is contained in a perovskite compound of a non-stoichiometric composition represented by a formula (KxA1-x)y(Nb1-zBz)O3, w... | 04/26/2005 |
| 6875369 | Ferroelectric/paraelectric materials, and phase shifter devices, true time delay devices and the like containing same Single-phase, non-cubic and single-phase, cubic ferroelectric/paraelectric lead-based perovskite-structured materials having reasonably low and fairly temperature insensitive dielectric constants (stable dielectric constants over a wide range of operating temperatur... | 04/05/2005 |
| 6818144 | Ferroelectric/paraelectric materials, and phase shifter devices, true time delay devices and the like containing same Single-phase, non-cubic and single-phase, cubic ferroelectric/paraelectric materials comprising a charge compensated lead-based perovskite having the general formula ABO3 is provided, which has reasonably low and fairly temperature insensitive dielectric ... | 11/16/2004 |
| 6802987 | Integrated circuit ferroelectric infrared detector and method Ferroelectric materials useful in monolithic uncooled infrared imaging use Ca and Sn substitutions in PbTiO3 and also have alternatives with dopants such as Dy, Ho, Bi, Ce, and Fe. The ferroelectrics may also be used in non-volatile integrated circuit memories. ... | 10/12/2004 |
| 6793843 | Piezoelectric ceramic Provided is a piezoelectric ceramic capable of improving its piezoelectric properties. The piezoelectric ceramic comprises a rhombohedral perovskite structure compound such as (Na0.5Bi0.5)TiO3, a tetragonal perovskite structure compo... | 09/21/2004 |
| 6764609 | Piezoelectric ceramic composition and piezoelectric element using the same A piezoelectric ceramic composition is provided, which includes a ceramic composition expressed by a general formula: Sr1-x-yM1xM2yBi2(Nb1-aTaa)2-zTizO9, wherein M1 is... | 07/20/2004 |
