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PIEZOELECTRIC

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252 - Compositions

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Class / Patent application numberDescriptionNumber of patent applications / Date published
2526209PZ Lead, zirconium, titanium or compound thereof containing 64
Entries
DocumentTitleDate
20090065732Composite powder with a high efficiency of releasing anions, and its attached substance and manufacturing method - A composite powder with a high efficiency of releasing anions, and its attached substance and manufacturing method. The composite powder is made by mixing tourmaline powder and carbon-series powder in an optimal ratio, and the composite powder is blended with an attached substance (such as polymer foaming materials or chemical fiber materials) to form a product, such that the synergy of the composite powder results in high piezoelectricity, thermoelectricity and related physical properties to achieve the multifunctional effects of releasing anions, removing odors and suppressing germs.03-12-2009
20130026410ELECTROSTRICTIVE COMPOSITE AND METHOD FOR MAKING THE SAME - An electrostrictive composite includes a flexible polymer matrix, a plurality of carbon nanotubes and a plurality of reinforcing particles dispersed in the flexible polymer matrix. The carbon nanotubes cooperatively form an electrically conductive network in the flexible polymer matrix.01-31-2013
20130026411PIEZOELECTRIC POLYMER FILM ELEMENT, IN PARTICULAR POLYMER FOIL, AND PROCESS FOR THE PRODUCTION THEREOF - The present invention relates to a piezoelectric polymer film element, in particular a polymer foil, comprising a polymer matrix, wherein hollow particles are arranged in the polymer matrix, and a process for the production of such a piezoelectric polymer film element, comprising the steps: A) provision of hollow particles and B) introduction of the hollow particles into a polymer matrix and C) shaping of the polymer matrix as a polymer film. The invention furthermore relates to an electromechanical converter comprising at least one first polymer film which comprises hollow particles as fillers.01-31-2013
20110012051PIEZOELECTRIC/ELECTROSTRICTIVE CERAMIC COMPOSITION - To provide an alkaline-niobate-based piezoelectric/electrostrictive ceramic composition that has excellent electric field induced strain during application of high electric field. A piezoelectric/electrostrictive film is a sintered body of a piezoelectric/electrostrictive ceramic composition. The piezoelectric/electrostrictive ceramic composition is a piezoelectric/electrostrictive composition, in which a compound of at least one kind of element selected from the group consisting of Ba, Sr, Ca, La, Ce, Nd, Sm, Dy, Ho and Yb and a Mn compound are contained in a perovskite-type oxide containing Li, Na and K as A-site elements and Nb and Sb as B-site elements, where a ratio of a total number of atoms of the A-site elements to a total number of atoms of the B-site elements is more than one and the number of atoms of Sb to the total number of atoms of the B-site elements is 1 mol % or more and 10 mol % or less.01-20-2011
20090236557PIEZOELECTRIC/ELECTROSTRICTIVE CERAMIC COMPOSITION - A piezoelectric/electrostrictive ceramic composition is provided which exhibits high density and excellent crystallinity even in the case of firing under lower temperature conditions than in conventional cases, and which also exhibits excellent piezoelectric/electrostrictive properties. An ABO09-24-2009
20090236556PIEZOELECTRIC/ELECTROSTRICTIVE CERAMIC COMPOSITION MANUFACTURING METHOD - A (Li, Na, K)(Nb, Ta)O09-24-2009
20110297870PIEZOELECTRIC MATERIAL AND PRODUCTION METHOD THEREFOR - Provided is an oriented piezoelectric material with satisfactory sintering property free of Pb that is a hazardous substance, and a water-soluble alkaline ion, and a production method therefor. To this end, provided is a compound, including a tungsten bronze structure metal oxide, in which: the tungsten bronze structure metal oxide contains at least metal elements of Ba, Bi, Ca, and Nb, the metal elements satisfying the following conditions in terms of molar ratio; and has a C-axis orientation. The compound shows Ba/Nb=a: 0.36312-08-2011
20100090154FILM DEPOSITING APPARATUS, A FILM DEPOSITING METHOD, A PIEZOELECTRIC FILM, AND A LIQUID EJECTING APPARATUS - A film depositing apparatus comprises: a process chamber; a gas supply source for supplying the process chamber with gases necessary for film deposition; an evacuating unit for evacuating the interior of the process chamber; a target holder placed within the process chamber for holding a target; a substrate holder for holding a deposition substrate within the process chamber in a face-to-face relation with the target holder; a power supply unit for supplying electric power between the target holder and the substrate holder to generate a plasma within the process chamber; and an anode provided between the target holder and the substrate holder so as to surround the outer periphery of the side of the substrate holder that faces the target holder, the anode comprising at least one plate member for capturing ions in the plasma generated within the process chamber.04-15-2010
20090289212PROCESS FOR PRODUCING POROUS FILMS AND FILM MATERIAL PRODUCED THEREFROM - A process for producing porous films (11-26-2009
20080308762PIEZOELECTRIC LAMINATE, SURFACE ACOUSTIC WAVE DEVICE, THIN-FILM PIEZOELECTRIC RESONATOR, AND PIEZOELECTRIC ACTUATOR - A piezoelectric laminate including a base and a first piezoelectric layer formed above the base and including potassium sodium niobate. The first piezoelectric layer is shown by a compositional formula (K12-18-2008
20110006244PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS SINTERED BODY - A piezoelectric/electrostrictive ceramic sintered body has a microstructure in which a matrix phase and an additional material phase having different compositions coexist and the additional material phase is dispersed in the matrix phase. A residual strain ratio of the additional material phase alone is larger than a residual strain ratio of the matrix phase alone. The matrix phase and the additional material phase have a composition in which a Mn compound containing Mn atoms of 0 parts by mol or more and 3 parts by mol or less and a Sr compound containing Sr atoms of 0 parts by mol or more and 1 part by mol or less are contained in a composite of 100 parts by mol represented by a general formula {Li01-13-2011
20090020726PIEZOELECTRIC CERAMIC COMPOSITION - Disclosed is a piezoelectric ceramic composition which is produced by adding two or more metal elements and has excellent piezoelectric properties. The piezoelectric composition comprises the main ingredient represented by the general formula: [Li01-22-2009
20090212254(Li, Na, K)(Nb, Ta, Sb)O3 BASED PIEZOELECTRIC MATERIAL AND MANUFACTURING METHOD THEREOF - The present inventive (Li, Na, K) (Nb, Ta, Sb) O08-27-2009
20120193568ELECTROSTRICTIVE COMPOSITE AND METHOD FOR MAKING THE SAME - An electrostrictive composite includes a flexible polymer matrix and a plurality of carbon nanotubes dispersed in the flexible polymer matrix. The carbon nanotubes cooperatively form an electrically conductive network in the flexible polymer matrix. A plurality of bubbles are defined by the flexible polymer matrix.08-02-2012
20100230629PIEZOELECTRIC COMPOSITIONS - Piezoelectric compositions are provided wherein mechanical and piezoelectric properties can be separately modulated. Preferred compositions include resin blends that comprise: (a) a piezoelectrically active polymer and (b) a matrix polymer, methods of making, and use of such resin blends. Advantages of preferred resin blends of the invention can include high piezoelectricity, mechanical strength and flexibility, convenient fabrication process, and high sensitivity at high temperatures.09-16-2010
20110017937RELAXOR-PT FERROELECTRIC SINGLE CRYSTALS - A <110> domain engineered relaxor-PT single crystals having a dielectric loss of about 0.2%, a high electromechanical coupling factor greater than about 85%, and high mechanical quality factor greater than about 500 is disclosed. In one embodiment, the relaxor-PT material has the general formula, Pb(B01-27-2011
20080302996PIEZOELECTRIC/ELECTROSTRICTIVE PORCELAIN COMPOSITION AND PIEZOELECTRIC/ELECTROSTRICTIVE ELEMENT - A (Li, Na, K)(Nb, Ta)O12-11-2008
20100025618PIEZOELECTRIC MATERIAL - Provided is a piezoelectric material which includes a compound free of lead and alkali metal and has a good piezoelectric property. The piezoelectric material where tungsten bronze structure oxides being free of lead and alkali metal and represented by A02-04-2010
20120132846PIEZOELECTRIC POLYMER MATERIAL AND METHOD FOR PRODUCING SAME - The invention provides a piezoelectric polymer material comprising a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and optical activity, the piezoelectric polymer material having: crystallinity as obtained by a DSC method of from 20% to 80%; a transmission haze with respect to visible light of 50% or less; and a product of the crystallinity and a standardized molecular orientation MORc, which is measured with a microwave transmission-type molecular orientation meter at a reference thickness of 50 μm, of from 40 to 700.05-31-2012
20120267563PIEZOELECTRIC AND/OR PYROELECTRIC COMPOSITE SOLID MATERIAL, METHOD FOR OBTAINING SAME AND USE OF SUCH A MATERIAL - A piezoelectric and/or pyroelectric composite solid hybrid material, includes: a solid dielectric matrix, a filler of at least one inorganic piezoelectric and/or pyroelectric material, wherein the filler includes filiform nanoparticles distributed throughout the volume of the solid dielectric matrix with an amount by volume of less than 50%, and in that the main directions of elongation of the filiform nanoparticles of the inorganic filler distributed in the dielectric matrix have a substantially isotropic distribution in the solid dielectric matrix. Also described is method for manufacturing and using such a hybrid material for producing structural parts and supported films deposited on the surface of such a substrate for: detecting mechanical stress by direct piezoelectric effect; detecting temperature variations by direct pyroelectric effect; creating a mechanical wave by reverse piezoelectric effect in a flexible audio device, in a de-icing device or in a mechanical anti-fouling device; and manufacturing a soundproof material.10-25-2012
20120091389PROCESS - A process for the preparation of a niobium compound of formula (I):04-19-2012
20130015393HIGHLY INSULATIVE AND HIGHLY STABLE PIEZOELECTRIC SINGLE LTGA CRYSTAL, METHOD FOR PRODUCING THE SAME, PIEZOELECTRIC ELEMENT USING SAID SINGLE LTGA CRYSTAL, AND COMBUSTION PRESSURE SENSORAANM Hayashi; TakayukiAACI Kitasaku-gunAACO JPAAGP Hayashi; Takayuki Kitasaku-gun JPAANM Aruga; ToshimitsuAACI Kitasaku-gunAACO JPAAGP Aruga; Toshimitsu Kitasaku-gun JPAANM Matsukura; MakotoAACI Hokuto-shiAACO JPAAGP Matsukura; Makoto Hokuto-shi JPAANM Anzai; YutakaAACI Hokuto-shiAACO JPAAGP Anzai; Yutaka Hokuto-shi JPAANM Miyamoto; AkioAACI Hokuto-shiAACO JPAAGP Miyamoto; Akio Hokuto-shi JPAANM Matsumura; SadaoAACI Hokuto-shiAACO JPAAGP Matsumura; Sadao Hokuto-shi JPAANM Furukawa; YasunoriAACI Hokuto-shiAACO JPAAGP Furukawa; Yasunori Hokuto-shi JP - In accordance with the present invention, there is provided a method for producing a single LTGA crystal from a polycrystalline starting material prepared from a mixture of La01-17-2013
20130126774PIEZOELECTRIC FOAM STRUCTURES AND HYDROPHONE UTILIZING SAME - Disclosed is a piezoelectric foam formed of elastically anisotropic materials. The piezoelectric foam is defined with a unit cell having a relative density and volume fraction, and deformation specified by subjecting the unit cell to controlled mechanical and electrical loading conditions. Resultant stress and electric displacements field components are measured by capturing a homogeneous coupled response of the unit cell and by computing piezoelectric material constants using the captured homogeneous coupled response, to identify asymmetric and symmetric F1, F2 and F3 type piezoelectric foam structures.05-23-2013
20110210281PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS SINTERED BODY - A piezoelectric/electrostrictive ceramic sintered body has a microstructure in which a matrix phase and an additional material phase having different compositions coexist and the additional material phase is dispersed in the matrix phase. A residual strain ratio of the additional material phase alone is larger than a residual strain ratio of the matrix phase alone. The matrix phase and the additional material phase have a composition in which a Mn compound containing Mn atoms of 0 parts by mole or more and 3 parts by mole or less and a Ba compound containing Ba atoms of 0 parts by mole or more and 1 part by mole or less are contained in a composite of 100 parts by mole represented by a general formula {Li09-01-2011
20130153813POLING TREATMENT METHOD, PLASMA POLING DEVICE, PIEZOELECTRIC SUBSTANCE, AND MANFACTURING METHOD THEREFOR - The plasma poling device includes: a holding electrode 06-20-2013
20130153814Solution or Suspension Containing Fluoropolymer, Method for Producing Same, and Use Thereof for Producing Piezoelectric and Pyroelectric Coatings - The invention relates to a method for producing a homogenous solution of a fluoropolymer, selected from fluoropolymers and fluoro-copolymers and mixtures of various fluoro-homopolymers and/or fluoro-copolymers in a high boiling solvent, whereby (a) the fluoropolymer to be dissolved is dissolved in a mixture of at least two solvents, the first comprising a boiling point of less than 150° C., and/or a vapor pressure of over 5 hPa (at 20° C.), and the second being a high boiling solvent comprising a boiling point at least 50 K higher than the first solvent and/or the boiling point thereof being selected so that the solvent mixture comprises a separation factor α of ≧1, and subsequently (b) the first solvent is substantially or completely removed from the mixture. The invention further relates to a method for producing suspensions of inorganic particles of a piezoelectrically and pyroelectrically active or activatable oxide in such fluoropolymer solutions and to the product of said method. The colorless fluoropolymer solutions and opaque white suspensions are suitable for producing laminar piezoelectric and pyroelectric coatings, in particular using doctor blade or screen printing methods.06-20-2013

Patent applications in class PIEZOELECTRIC

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