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| Number | Title | Issue Date |
| 8182713 | Lead-free piezoelectric material There is provided a lead-free piezoelectric material capable of showing a high piezoelectric coefficient (d33>500 pC/N) exceeding that of soft PZT. The lead-free piezoelectric material contains no toxic element such as Pb, comprising a pseudo-binary solid... | 05/22/2012 |
| 8142679 | Piezoelectric ceramic composition and piezoelectric element made by using the same The present invention provides a piezoelectric ceramic composition having a high thermal resistance and a high piezoelectric distortion constant and a piezoelectric element using the piezoelectric ceramic composition. The piezoelectric ceramic composition of the pre... | 03/27/2012 |
| 8142677 | Piezoelectric ceramic composition A piezoelectric ceramic composition excellent in all of the electric property Qmax, heat resisting properties and temperature characteristics of oscillation frequencies is provided. The piezoelectric ceramic composition comprises a phase mainly comprising... | 03/27/2012 |
| 8142678 | Perovskite type oxide material, piezoelectric element, liquid discharge head and liquid discharge apparatus using the same, and method of producing perovskite type oxide material A perovskite type oxide of a single crystal structure or a uniaxial-oriented crystal structure is represented by ABO3. Site A includes Pb as a main component and site B includes a plurality of elements. The perovskite type oxide includes a plurality of cr... | 03/27/2012 |
| 8119024 | Piezoelectric single crystal ingot, producing method therefor and piezoelectric single crystal device A piezoelectric single crystal ingot is produced by the Bridgman method and contains a relaxor having a composition of Pb(Mg, Nb)O3 and lead titanate having a composition of PbTiO3. In the piezoelectric single crystal ingot, the compositional f... | 02/21/2012 |
| 8110121 | Lead zirconate titanate with iron/tungstein doping, method of producing a piezoceramic material with the lead zirconate titanate, and use of the piezoceramic material A piezoceramic composition has a nominal empirical formula of Pb1−aREbAEc[ZrxTiy(FefWw)z]O3. RE is a rare earth metal with a fraction b and AE is an alkaline earth m... | 02/07/2012 |
| 8092706 | Piezoelectric 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: [Lix(K... | 01/10/2012 |
| 8075795 | Piezoelectrics, piezoelectric element, and piezoelectric actuator A piezoelectric body includes a perovskite type compound that is expressed by a compositional formula being Pb (Zrx Ti1-x)1-y My O3, where M is at least one of Ta and Nb, x is in a range of 0.51≦x≦0.57, and ... | 12/13/2011 |
| 8034249 | Piezoelectric/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 ... | 10/11/2011 |
| 8034250 | Piezoelectric material Provided is a piezoelectric material including a lead-free perovskite-type composite oxide which is excellent in piezoelectric characteristics and temperature characteristics and is represented by the general formula (1): xABO3-yAâ... | 10/11/2011 |
| 8021568 | Nickel-molybdenum-doped lead zirconate titanate, method for the production of a piezoceramic component using said lead zirconate titanate, and use of the piezoceramic component A piezoceramic composition of a calculated empirical formula Pb1-aREbAEc[ZrxTiy(NinMom)z]O3, wherein RE represents a rare earth metal having a rare earth metal content... | 09/20/2011 |
| 7998362 | Piezoelectric substance, piezoelectric element, liquid discharge head using piezoelectric element, liquid discharge apparatus, and production method of piezoelectric element A main component of a piezoelectric substance is PZT which has a perovskite type structure expressed as Pb(ZrxTi1-x)O3, in which x expresses an element ratio Zr/(Zr+Ti) of Zr and Ti in the formula, an element ratio Pb/(Zr+Ti) of Pb, ... | 08/16/2011 |
| 7686974 | High energy density piezoelectric ceramic materials The present invention includes methods, devices, and compositions having improved piezoelectric characteristics with high energy density. Compositions of the present invention are ceramic materials of the formula: Pb[(Zr0.52Ti0.48)O3... | 03/30/2010 |
| 7678290 | Method for production of PZT-based ceramics having a slow sintering temperature A method for manufacturing a PZT-based low-sintering piezoelectric ceramic material, the ions to be added as starting compounds being added as powdered oxides and/or powdered carbonates, mixed together, and then calcined to form the piezoelectric ceramic material. A... | 03/16/2010 |
| 7595006 | Piezoelectric ceramic composition and piezoelectric actuator A piezoelectric ceramic composition has the composition formula (Pb(a-b)Meb){(Ni(1-c).d/3Znc.d/3Nb2/3)zTixZr(1-x-z)}O3, wherein Me represents at least one element sele... | 09/29/2009 |
| 7560043 | Compositions for high power piezoelectric ceramics Piezoelectric ceramics of the formula Pb(1-z)Mz(Mg1/3Nb2/3)x(ZryTi1-y)1-xO3 where M can be either Sr or Ba or both, and x is between 0.3 and 0.6, y is between 0.2 and ... | 07/14/2009 |
| 7547401 | Compositions for high power piezoelectric ceramics Piezoelectric compositions of the formula Pb(1-z)Mz(Mg1/3Nb2/3)x(ZryTi1-y)1-xO3 where M can be either Sr or Ba or both, x is between about 0.35 and about 0.40, y is be... | 06/16/2009 |
| 7507347 | Piezoelectric ceramic composition and laminated piezoelectric element Provided is a piezoelectric ceramic composition capable of being sintered at low temperatures and in a low-oxygen reductive atmosphere and capable of attaining a sufficient displacement even at high voltages of 1 kV/mm or more. The piezoelectric ceramic composition ... | 03/24/2009 |
| 7504042 | Piezoelectric ceramic composition and piezoelectric ceramic electronic component A piezoelectric ceramic composition is represented by [(Pb1-xXx)a{(Nib/3Nb2/3)cTidZr1-c-d}O3] in which X is at least one of Sr, Ba, Ca and La), and the compositional a... | 03/17/2009 |
| 7494602 | Compositions for high power piezoelectric ceramics A class of ceramic compositions according to the formula Pb(1-z)Mz(Mn1/3Sb2/3)x(ZryTi1-y)1-xO3 where M is selected to be either Sr or Ba, x is selected to be between 0... | 02/24/2009 |
| 7387745 | Piezoelectric ceramic materials based on lead zirconate titanate (PZT) having the crystal structure perovskite The invention relates to piezoelectric ceramic materials based on the system Pb(Zr,Ti)O3, i.e. solid solutions of lead zirconate PbTO3, characterized by having very good dielectric and electromechanical properties that can be adopted for differ... | 06/17/2008 |
| 7344654 | Piezoelectric ceramic composition and piezoelectric actuator A piezoelectric ceramic composition has the composition formula (Pb(a-b)Meb){(Ni(1-c)/3Znc/3Nb2d/3)zTixZr(1-x-z)}O3, wherein Me represents at least one element selecte... | 03/18/2008 |
| 7303692 | Compositions for high power piezoelectric ceramics Piezoelectric ceramics of the formula Pb(1-z)Mz(Mg1/3Nb2/3)x(ZryTi1-y)1-xO3 where M can be either Sr or Ba or both, and x is between 0.3 and 0.6, y is between 0.2 and ... | 12/04/2007 |
| 7264744 | Piezoelectric ceramic and piezoelectric device A piezoelectric ceramic and a piezoelectric device capable of being fired at a low temperature and improving piezoelectric properties are provided. The piezoelectric ceramic and the piezoelectric device includes Pba[(Znb/3Nb2/3)... | 09/04/2007 |
| 7132057 | Compositions for high power piezoelectric ceramics This invention relates to a piezoelectric ceramic of the formula Pb(1−z)Mz(Mg1/3Nb2/3)x(ZryTi1−y)1−xO3 where M can be either Sr or Ba or both and x is in between... | 11/07/2006 |
| 7101490 | Piezoelectric ceramic materials, based on lead-ziconate-titanate (PZT), comprising valence-compensated complexes containing Ag The characteristics of piezoceramic multilayer actuators based on lead-zirconate-titanate are determined to a great extent by the compatibility of PZT ceramics having a low sintering temperature with the AgPd internal metallisation during cofiring. It is important t... | 09/05/2006 |
| 7045075 | Ceramic material and piezoelectric element using the same A ceramic material has piezoelectric characteristics, can be sintered at low temperature, and is suited to various piezoelectric devices. The ceramic material primarily includes Pb, Zr, and Ti and has the general formula ABOd, in which A is (Pb1−a | 05/16/2006 |
| 6979410 | Piezoelectric ceramic, method of manufacturing the same and piezoelectric device Provided are a piezoelectric ceramic and a piezoelectric device having a larger piezoelectric strain constant and capable of being fired at a lower temperature. A main component of PbA[(Mg1/3Nb2/3)a(Zn1/3Nb... | 12/27/2005 |
| 6878307 | Low temperature firable PZT compositions and piezoelectric ceramic devices using the same A piezoelectric ceramic composition firable at a reduced sintering temperature is provided. The main composition is expressed with the general formula: [(Pb1-m-n-pSrmBanCdp)(ZrxTi1-x)1-... | 04/12/2005 |
| 6811719 | High-power piezoelectric ceramics The disclosed invention relates to piezoelectric rare earth doped Pb(Zr,Ti)O3—Pb(Mn,Sb)O3 compounds including (zPb(ZrwTi(1−w))O3—(1−z)Pb(Mn1/3Sb2/3)O3+REx) whe... | 11/02/2004 |
| 6808649 | Soft piezoelectric ceramic composition and piezoelectric device using the same The soft piezoelectric ceramic composition is a soft piezoelectric ceramic composition sinterable at a reduced temperature with high piezoelectric parameters and is used in a piezoelectric device. Preferably the soft piezoelectric ceramic composition comprises: ... | 10/26/2004 |
| 6773621 | Piezoelectric ceramic material, method for production thereof and electroceramic multi-layer component A piezoelectric ceramic material having the molar composition Pb(1+c)−x−(3/2a)−1/2(x·b)A1xA2a(Zry(1−x·b−x·z)Ti(1−y)(1−x·b−x·w))(B1b | 08/10/2004 |
| 6692651 | High-performance piezoelectric ceramic The invention relates to piezoelectric ceramic materials consisting of lead zirconate titanate and (1) at least one of an alkaline earth pyrochlore and an alkali metal perovskite having the formula AB5+ O3, where B is Nb, Ta, or Sb; ... | 02/17/2004 |
| 6689287 | Ferroelectric and ferromagnetic material having improved impedance matching The subject invention includes a composite material comprising a ferroelectric material and a ferromagnetic material having a loss factor (tan δ) for the composite material which includes a dielectric loss factor of the ferroelectric material and a magne... | 02/10/2004 |
| 6685850 | Piezoelectric ceramic material The invention provides a piezoelectric ceramic material comprising a Bi3 TiNbO9 crystal and/or an MBi2 Nb2 O9 crystal which are each a bismuth layer compound, where M represents at least one element s... | 02/03/2004 |
| 6656378 | Piezoelectric ceramic composition reducing leakage current and piezoelectric device using the same Disclosed is a piezoelectric ceramic composition comprising a PZT piezoelectric composition, a B-site of which is substituted with a certain material, and chromium oxide, and a piezoelectric device using the piezoelectric ceramic composition. The piezoele... | 12/02/2003 |
| 6635818 | Wireless power supply method There is provided a wireless-type power supply method that is applied to the case where an object to which energy is to be transmitted is relatively small, such as a micromachine, and that allows high-voltage electrical energy to be transmitted without us... | 10/21/2003 |
| 6627105 | Method of fabricating a piezoelectric ceramic There is disclosed a method of fabricating a piezoelectric ceramics. It can obtain a small grain size and a fine grain phase by forming a combined powder being major components, stirring the combined powder with (COOH)2 water solution, dropping... | 09/30/2003 |
| 6627104 | Mechanochemical fabrication of electroceramics Mechanochemical fabrication produces electroceramics using oxides as starting materials. The fabrication starts with mixing industrial ceramic oxide powders. Electroceramic phases are formed by reacting the oxide powders in a mechanochemical chamber, whic... | 09/30/2003 |
| 6623656 | Source reagent composition for CVD formation of Zr/Hf doped gate dielectric and high dielectric constant metal oxide thin films and method of using same Chemical vapor deposition (CVD) precursor compositions for forming Zr/Hf doped gate dielectric, ferroelectric, or high dielectric constant (k) metal oxide thin films. The precursor composition in one embodiment comprises a metal precursor having a general... | 09/23/2003 |
