Barium Titanate Patents (Class 501/137)
  • Patent number: 10343930
    Abstract: The present invention relates to the dielectric composition including barium titanate, strontium titanate, titanium oxide and bismuth oxide. In case when the content of barium titanate, converted to BaTiO3, is a mol %, the content of strontium titanate, converted to SrTiO3, is b mol %, the content of titanium oxide and bismuth oxide, converted to Bi2Ti3O9, is c mol %, and a+b+c=100, a, b and c are values within a scope surrounded by the following four points, i.e. point A, point B, point C and point D in a three-dimensional phase diagram. Point A: (a, b, c)=(52.1, 40.0, 7.9); point B: (a, b, c)=(86.5, 5.6, 7.9); point C: (a, b, c)=(91.0, 5.6, 3.4); point D: (a, b, c)=(56.6, 40.0, 3.4).
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: July 9, 2019
    Assignees: TDK CORPORATION, TDK XIAMEN CO., LTD.
    Inventors: Guibin Ge, RuiLun Zhang, Fan Zhang, Jintao Huang, Kazuya Muto, Daisuke Ohtsu, Kakeru Watanabe
  • Patent number: 9974708
    Abstract: A rollator is disclosed, including first and second upright members, each including handle portions, wheels, hinges disposed between the wheels and the handle portions, channels disposed along the upright members between the hinges and the wheels, and lateral hinges orthogonal to the hinges. First and second foldable support members having wheels are attached to the hinges. At least one lateral support member is disposed between and attached to the lateral hinges, and includes an intermediate hinge. Brake systems include brake lines communicating between brake controls and brakes. In a reversible storage configuration, the foldable support members are rotated to be at least partially disposed in the channels, and the lateral hinges and intermediate hinge rotate to collapse the lateral support member, bringing the upright members with the folded foldable support members adjacent to one another.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: May 22, 2018
    Assignee: More Joyful Living, LLC
    Inventors: Jane Leader Janeczek, Theodore Janeczek, David Celento
  • Patent number: 9842696
    Abstract: There are provided a composite perovskite powder, a preparation method thereof, and a paste composition for an internal electrode having the same, the composite perovskite powder capable of preventing ions from being eluted from an aqueous system at the time of synthesis while being ultra-atomized, such that when the composite perovskite powder is used as an inhibitor powder for an internal electrode, sintering properties of the internal electrode may be deteriorated, and sintering properties of a dielectric material may be increased; accordingly, connectivity of the internal electrode may be improved, and permittivity and reliability of a multilayer ceramic capacitor (MLCC) may be increased.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: December 12, 2017
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Kum Jin Park, Chang Hak Choi, Sang Min Youn, Kwang Hee Nam, Ki Myoung Yun, Hyung Joon Jeon, Jong Hoon Yoo
  • Patent number: 9708222
    Abstract: A low-temperature sintering dielectric composition contains barium titanate (BaTiO3) as a main ingredient and accessory ingredients including 1.0 to 2.0 mol % of barium carbonate (BaCO3), 0.5 to 1.0 mol % of at least one rare earth oxide selected from the group consisting of Y2O3, Ho2O3, Dy2O3, and Yb2O3, 0.1 to 1.0 mol % of manganese oxide (MnO), and 1.0 to 2.0 mol % of borosilicate based glass, based on 100 mol % of the main ingredient.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: July 18, 2017
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Min Hee Hong
  • Patent number: 9666369
    Abstract: There are provided a dielectric ceramic composition and a multilayer ceramic capacitor containing the same. The dielectric ceramic composition according to the present disclosure may contain a main base material ingredient and a first accessory ingredient, wherein the first accessory ingredient contains samarium (Sm) and other rare earth (RE) elements, and a ratio (a/b) of a content (a) of samarium (Sm) to a content (b) of other rare earth elements in the first accessory ingredient satisfies 0.1?a/b?2.0.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: May 30, 2017
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae Sung Park, Chan Hee Nam, Doo Young Kim, Seok Hyun Yoon, Du Won Choi, Chang Hoon Kim
  • Patent number: 9627141
    Abstract: A ceramic multi-layer capacitor includes a main body, which has ceramic layers arranged along a layer stacking direction to form a stack, and first and second electrode layers arranged between the ceramic layers. The multi-layer capacitor also includes a first external contact-connection arranged on a first side surface of the main body and electrically conductively connected to the first electrode layers, and a second external contact-connection arranged on a second side surface (62) of the main body (2). The second side surface is situated opposite the first side surface and is electrically conductively connected to the second electrode layers.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: April 18, 2017
    Assignee: EPCOS AG
    Inventors: Günter Engel, Michael Schossmann, Markus Koini, Andrea Testino, Christian Hoffmann
  • Patent number: 9528009
    Abstract: A method to prepare a self-decontaminating surface, where that method includes dissolving tartaric acid in water, adding titanium (IV) isopropoxide to the tartaric acid solution to form a coating composition in water, and casting that coating composition onto a surface to form a coating having anti-microbial function.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: December 27, 2016
    Inventors: Craig Grossman, Mai Ngo, Ronald Wysocki
  • Patent number: 9382162
    Abstract: There are provided a dielectric composition and a multilayer ceramic electronic component manufactured using the same, the dielectric composition including a dielectric grain having a perovskite structure represented by ABO3, wherein, when an imaginary line is drawn in a direction from a center of the dielectric grain to a grain boundary thereof, a content of rare earth elements in a region corresponding to 0.75 to 0.95% of the dielectric grain from the center of the dielectric grain may be 0.5 to 2.5 at %, based on 100 at % of a B-site ion, so that the multilayer ceramic electronic component manufactured using the dielectric composition can have excellent reliability and secure a high dielectric constant.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 5, 2016
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sung Hyung Kang, Doo Young Kim, Chang Hak Choi
  • Patent number: 9130168
    Abstract: A piezoelectric ceramic that includes barium titanate and 0.04 mass % or more and 0.20 mass % or less manganese relative to barium titanate. The piezoelectric ceramic is composed of crystal grains. The crystal grains include crystal grains A having an equivalent circular diameter of 30 ?m or more and 300 ?m or less and crystal grains B having an equivalent circular diameter of 0.5 ?m or more and 3 ?m or less. The crystal grains A and the crystal grains B individually form aggregates and the aggregates of the crystal grains A and the aggregates of the crystal grains B form a sea-island structure.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: September 8, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kubota, Tatsuo Furuta, Hiroshi Saito, Toshihiro Ifuku, Kenichi Takeda, Tetsuro Fukui
  • Patent number: 9036331
    Abstract: There is provided a dielectric composition including: a base powder including BaTiO3; a first accessory component including a content (x1) of 0.1 to 1.0 at % of an oxide or a carbonate including transition metals, based on 100 moles of the base powder; a second accessory component including a content (y) of 0.01 to 3.0 at % of oxide or carbonate including a fixed valence acceptor element, based on 100 moles of the base powder; a third accessory component including an oxide or a carbonate including a Ce element (content of z at %) and at least one rare earth element (content of w at %); and a fourth accessory component including a sintering aid, wherein 0.01?z?x1+4y and 0.01?z+w?x1+4y based on 100 moles of the base powder.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: May 19, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Seok Hyun Yoon, Ji Young Park, Sun Ho Yoon, Sang Hoon Kwon, Chang Hoon Kim
  • Patent number: 9023748
    Abstract: A dielectric ceramic material comprises a primary component of barium titanate (BaTiO3) and at least one additive component. The additive component has a mole percentage from 1% to 50% and is selected from the group consisting of lithium tantalite (LiTaO3), barium cerate (BaCeO3), sodium metaniobate (NaNbO3) and the combinations thereof.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: May 5, 2015
    Assignee: Holy Stone Enterprise Co., Ltd.
    Inventors: Sea-Fue Wang, Yuan-Cheng Lai, Jian-Hua Li, Ming-Hua Chen
  • Patent number: 9023747
    Abstract: There are provided a dielectric composition and a preparation method thereof, the dielectric composition including: a first perovskite powder for a core represented by ABO3: and a second perovskite powder for a shell represented by ABO3, having an average particle diameter corresponding to ? to 1/10 of an average particle diameter of the first perovskite powder, and included in an amount of 1 to 70 parts by weight with respect to 100 parts by weight of the first perovskite powder, wherein particles of the second perovskite powder have pores having a volume fraction of 3 to 50 vol % therein. According to the present invention, there are provided a dielectric composition having excellent dielectric characteristics and electrical characteristics, and a preparation method thereof.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: May 5, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Chang Hak Choi, Chang Hoon Kim, Sang Min Youn, Kwang Hee Nam, Ki Myoung Yun, Hyung Joon Jeon, Jong Hoon Yoo
  • Patent number: 9018118
    Abstract: A liquid composition is provided for forming a thin film in the form of a mixed composite metal oxide in which a composite oxide B containing copper (Cu) and a composite oxide C containing manganese (Mn) are mixed into a composite metal oxide A represented with the general formula: Ba1-xSrxTiyO3, wherein the molar ratio B/A of the composite oxide B to the composite metal oxide A is within the range of 0.002<B/A<0.05, and the molar ratio C/A of the composite oxide C to the composite metal oxide A is within the range of 0.002<C/A<0.03.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: April 28, 2015
    Assignees: Mitsubishi Materials Corporation, STMicroelectronics(Tours) SAS
    Inventors: Toshiaki Watanabe, Hideaki Sakurai, Nobuyuki Soyama, Guillaume Guegan
  • Publication number: 20150111719
    Abstract: A dielectric ceramic material includes the composite ceramic powder of BaTiO3 and Ba2LiTa5O15, or BaTiO3 and Ba2LiNb5O15 that are based on the oxides of BaO, TiO2, Li2O and Ta2O5, or BaO, TiO2, Li2O and Nb2O5 as initial powder materials prepared subject to a respective predetermined percentage. This dielectric ceramic material simply uses simple binary oxides as initial powder materials that are easy to obtain and inexpensive, and that eliminate the complicated manufacturing process of synthesizing BaTiO3, Ba2LiTa5O15 or Ba2LiNb5O15, making the whole process more simple and the manufacturing cost more cheaper and preventing the formation of other compounds.
    Type: Application
    Filed: December 19, 2014
    Publication date: April 23, 2015
    Inventors: Sea-Fue WANG, Jian-Hua LI, Yuan-Cheng LAI, Yu-Wen HUNG, Jun-Hao DENG, Ming-Hua CHEN
  • Patent number: 9001494
    Abstract: A dielectric ceramic that contains, as its main constituent, a perovskite-type compound containing Ba and Ti, and, with respect to the Ti content of 100 parts by mole, contains Re1 (Re1 is at least one element of La and Nd) in the range of 0.15 to 3 parts by mole, Y in the range of 0.1 to 3 parts by mole, Mg in the range of 0.3 to 13 parts by mole, and Fe in the range of 0.01 to 5 parts by mole.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: April 7, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kazuji Kushiro, Tatsuya Ishikawa, Tomomitsu Yamanishi, Naoki Kawara
  • Publication number: 20150094199
    Abstract: A convenient and versatile method for preparing complex metal oxides is disclosed. The method uses a low temperature, environmentally friendly gel-collection method to form a single phase nanomaterial. In one embodiment, the nanomaterial consists of BaAMnBTiCOD in a controlled stoichiometry.
    Type: Application
    Filed: July 29, 2014
    Publication date: April 2, 2015
    Inventors: Stephen O'Brien, Shuangyi Liu, Limin Huang
  • Patent number: 8968609
    Abstract: A contactless power transfer system is proposed. The power transfer system comprises a field-focusing element comprising a dielectric material. The dielectric material comprises a composition that is selected from the family of (Ba,Sr)TiO3 or CaCu3Ti4O12. The compositions of the (Ba,Sr)TiO3 include the materials such as Ca1-x-yBaxSryTi1-zCrzO3-?Np, wherein 0<x<1; 0<y<1; 0?z?0.01; 0???1; and 0?p?1. The compositions of the CaCu3Ti4O12 include the materials such as Ca1-x-yBaxSry (Ca1-zCuz)Cu2Ti4-?Al?O12-0.5?, wherein 0?x<0.5; 0?y<0.5; 0?z?1; and 0???0.1.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: March 3, 2015
    Assignee: General Electric Company
    Inventors: Kalaga Murali Krishna, Jay Chakraborty, Lohit Matani, Adnan Kutubuddin Bohori, Suma Memana Narayana Bhat, Somakumar Ramachandrapanicker
  • Patent number: 8968603
    Abstract: A dielectric material is provided. The material includes Ca1-x-yBaxSryTi1 -zCrzO3-?Ap, wherein A is nitrogen, fluorine, or combinations thereof; x and y can vary between the value of zero and one such that 0<x<1 and 0<y<1; z can vary between the value of zero and 0.01 such that 0?z?0.01; and ? and p can vary between the value of zero and one such that 0???1 and 0?p?1, with a proviso that z and p are not simultaneously zero. A dielectric component including the dielectric material and a system including the dielectric component are provided.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: March 3, 2015
    Assignee: General Electric Company
    Inventors: Kalaga Murali Krishna, Lohit Matani
  • Patent number: 8946104
    Abstract: A dielectric ceramic whose primary component is an ABO3 compound (A contains Ba and B contains Ti) has a per-layer thickness of approx. 0.5 ?m or less, where the volume ratio to all dielectric sintered grains of those whose grain size is in a range of 0.02 ?m to 0.15 ?m is adjusted to a grain size distribution of 1% to 10%. High dielectric constant and high reliability can be achieved at the same time with the dielectric ceramic.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: February 3, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yukihiro Konishi, Yusuke Kowase, Kazumichi Hiroi, Kotaro Mizuno, Ayumu Sato
  • Publication number: 20150029637
    Abstract: There is provided a dielectric composition for low-temperature sintering including BaTiO3 as a main ingredient, and xB2O3-(1-x)BaOas an accessory ingredient, wherein x ranges from 0.25 to 0.8, and the content of the accessory ingredient ranges from 0.1 to 2.00 mol %, based on 100 mol % of the main ingredient.
    Type: Application
    Filed: October 29, 2013
    Publication date: January 29, 2015
    Inventors: Jong Bong LIM, Seok Hyun YOON, Doo Young KIM, Sang Huk KIM
  • Patent number: 8937030
    Abstract: The present invention is directed to perovskite nanostructures of Formula ABO3, wherein A and B represent one or more metals with A having a valence lower than B, to methods of making the perovskite nanostructures of Formula ABO3 comprising their synthesis within and precipitation from reverse micelles, and the use of the perovskite nanostructures of Formula ABO3 as capacitors, and their use in dynamic random access memory, electromechanics, and non-linear optics.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: January 20, 2015
    Assignee: Research Foundation of the City University of New York
    Inventors: Kai Su, Nan-Loh Yang
  • Publication number: 20150016017
    Abstract: A dielectric composition may include a first dielectric powder; and a second dielectric powder having an average grain size smaller than that of the first dielectric powder and included in the dielectric composition in an amount of 0.01 to 1.5 parts by weight based on 100 parts by weight of the first dielectric powder, and a multilayer ceramic capacitor formed using the same. A multilayer ceramic capacitor may include: a ceramic body including dielectric layers; first and second internal electrodes disposed in the ceramic body to face each other with the respective dielectric layers interposed therebetween; and first and second external electrodes electrically connected to the first and second internal electrodes, respectively. The dielectric layers are formed of a dielectric composition including a first dielectric powder and a second dielectric powder having an average grain size smaller than that of the first dielectric powder and included in the dielectric composition in an amount of 0.01 to 1.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 15, 2015
    Inventors: Jae Sung PARK, Sang Hyuk KIM, Chan Hee NAM, Chang Hoon KIM, Seok Hyun YOON, Doo Young KIM
  • Publication number: 20150009604
    Abstract: A dielectric ceramic material comprises a primary component of barium titanate (BaTiO3) and at least one additive component. The additive component has a mole percentage from 1% to 50% and is selected from the group consisting of lithium tantalite [lithium tantalate (LiTaO3)], barium cerate (BaCeO3), sodium metaniobate [sodium niobate (NaNbO3)] and the combinations thereof.
    Type: Application
    Filed: September 24, 2014
    Publication date: January 8, 2015
    Inventors: Sea-Fue WANG, Yuan-Cheng LAI, Jian-Hua LI, Ming-Hua CHEN
  • Publication number: 20140378295
    Abstract: The present invention aims to provide an amorphous dielectric film and an electronic component in which the relative permittivity and the temperature coefficient of electrostatic capacitance can be maintained and the withstand voltage can be increased even if the dielectric film is further thinned. The amorphous dielectric film of the present invention is characterized in that it is a dielectric film composed of an amorphous composition with A-B—O as the main component, wherein A contains at least two elements selected from the group consisting of Ba, Ca and Sr, and B contains Zr. When the main component of the dielectric film is represented by (BaxCaySrz)?—B—O, x, y and z meet the conditions of 0?x?1, 0?y?1, 0?z?1, respectively, x+y+z=1 and at least any two of x, y and z are 0.1 or more. When A/B is represented by ?, 0.5???1.5.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 25, 2014
    Inventors: Toshihiko KANEKO, Saori TAKEDA, Yuki YAMASHITA, Junichi YAMAZAKI
  • Patent number: 8916489
    Abstract: A dielectric ceramic composition for multilayer ceramic capacitor (MLCC) includes a first component of 91 to 98 wt % and a second component of 2 to 9 wt %, wherein the first component includes a main component BaTiO3 of 94 to 98 wt %, a first subcomponent of 0.5 to 2 wt % including a glass powder having a network structure, and a second subcomponent of 1 to 4 wt % including at least one of MgO, Cr2O3 and Mn3O4, and the second component includes (Ba1-y-xCaySrx)(ZryTi1-y)O3, and x satisfies 0.2?x?0.8 and y satisfies 0.03?y?0.15.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 23, 2014
    Assignee: Samhwa Capacitor Co., Ltd.
    Inventors: Young Joo Oh, Jung Rag Yoon, Byong Chul Woo
  • Patent number: 8889776
    Abstract: The present invention relates to composite materials with a high dielectric constant and high dielectric strength and to methods of producing the composite materials. The composite materials have high dielectric constants at a range of high frequencies and possess robust mechanical properties and strengths, such that they may be machined to a variety of configurations. The composite materials also have high dielectric strengths for operation in high power and high energy density systems. In one embodiment, the composite material is composed of a trimodal distribution of ceramic particles, including barium titanate, barium strontium titanate (BST), or combinations thereof and a polymer binder.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: November 18, 2014
    Assignee: The Curators of the University of Missouri
    Inventors: Randy D. Curry, Kevin O'Connor
  • Publication number: 20140336035
    Abstract: An insulator for spark plug with a main constituent of alumina and containing silicon includes a grain boundary phase positioned between alumina particles. The grain boundary phase contains: a group 2A element; a rare earth element; and at least one kind of zirconium, titanium, chrome, niobium, manganese, and iron (a first element). Assuming that a total amount of the rare earth element is X (mass %), a total amount of the group 2A element is Y (mass %), and a total amount of the first element is Z (mass %), the following are met: 0.40?Y/X?2.00 0.10?Z/X?0.40.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 13, 2014
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Katsuya TAKAOKA, Yutaka YOKOYAMA, Kengo FUJIMURA, Hironori UEGAKI, Hiroki TAKEUCHI, Hirokazu KURONO, Toshitaka HONDA, Kuniharu TANAKA, Takeshi MITSUOKA
  • Publication number: 20140313634
    Abstract: A dielectric composition includes a base main component including Ba and Ti and an accessory component, wherein a ratio of domain width/grain size of the dielectric composition is in the range of 0 to 0.2, a multilayer ceramic capacitor using the same, and a method for manufacturing a multilayer ceramic capacitor. It is possible to provide a dielectric composition that can implement a higher dielectric constant and good high temperature withstand voltage characteristics in the same grain size condition. It is expected that this effect can be effectively applied to the development of ultra high capacity MLCCs having a thin dielectric by implementing the same capacity while increasing the thickness of the dielectric than the case of applying the conventional dielectric material.
    Type: Application
    Filed: October 3, 2013
    Publication date: October 23, 2014
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Seok Hyun YOON, Jong Bong Lim, Jae Sung Park, Doo Young Kim, Chang Hoon Kim
  • Patent number: 8853116
    Abstract: A method of forming composition-modified barium titanate ceramic particulate includes mixing a plurality of precursor materials and a precipitant solution to form an aqueous suspension. The plurality of precursors include barium nitrate, titanium chelate, and a metal or oxometal chelate. The precipitant solution includes tetraalkylammonium hydroxide and tetraalkylammonium oxalate. The method further includes treating the aqueous suspension at a temperature of at least 150° C. and a pressure of at least 200 psi, and separating particulate from the aqueous suspension after treating.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: October 7, 2014
    Assignee: EEStor, Inc.
    Inventors: Richard D. Weir, Carl W. Nelson
  • Publication number: 20140293502
    Abstract: A dielectric ceramic composition including a base material represented by (Ba(1-x)+REx)mTiO(3+x) (here, 0.995?m?1.010, 0.001<x<0.010, and RE is at least one rare earth (RE) atom selected from a group consisting of Dy, Y, Ho, Sm, and Gd) or Bam(Ti+REx)O(3?x) (here, 0.995?m?1.010, 0.001<x<0.010, and RE is at least one RE atom selected from a group consisting of Dy, Y, Ho, Sm, and Gd) as a main component, and a multi-layer ceramic capacitor using the same. In the dielectric ceramic composition, high permittivity (dielectric constant of 1800 or more) and high temperature reliability may be secured by using a RE atom doped/solid-solubilized base material and adding oxides, which are sub-components.
    Type: Application
    Filed: October 9, 2013
    Publication date: October 2, 2014
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Du Won CHOI, Min Sung Song, Jae Sung Park, Sung Hyung Kang, Chang Hoon Kim
  • Patent number: 8846556
    Abstract: A piezoelectric ceramic that includes barium titanate and 0.04 mass % or more and 0.20 mass % or less manganese relative to barium titanate. The piezoelectric ceramic is composed of crystal grains. The crystal grains include crystal grains A having an equivalent circular diameter of 30 ?m or more and 300 ?m or less and crystal grains B having an equivalent circular diameter of 0.5 ?m or more and 3 ?m or less. The crystal grains A and the crystal grains B individually form aggregates and the aggregates of the crystal grains A and the aggregates of the crystal grains B form a sea-island structure.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: September 30, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Kubota, Tatsuo Furuta, Hiroshi Saito, Toshihiro Ifuku, Kenichi Takeda, Tetsuro Fukui
  • Publication number: 20140268492
    Abstract: There is provided a dielectric composition containing barium calcium tin titanate powder composed of (Ba(1-x-y)CaxSny)zTiO3, satisfying 0.01?x?0.15, 0.01?y?0.20, and 0.99?z?1.01.
    Type: Application
    Filed: June 28, 2013
    Publication date: September 18, 2014
    Inventors: Han Soung JEONG, Doo Yeon HWANG, Chang Hoon KIM, Sun Ho YOON, Seok Hyun YOON, Hyo Jung KIM
  • Patent number: 8835339
    Abstract: A framework for developing high quality factor (Q) material for electronic applications in the radio frequency range is provided. In one implementation, ceramic materials having a tungsten bronze crystal structure is modified by substituting one or more elements at one or more lattice sites on the crystal structure. The substitute elements are selected based on the ionic radius and other factors. In other implementations, the modified ceramic material is prepared in combination with compositions such as rutile or a perovskite to form a orthorhombic hybrid of perovskite and tetragonal tungsten bronze.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: September 16, 2014
    Assignee: Skyworks Solutions, Inc.
    Inventor: Michael D. Hill
  • Publication number: 20140218840
    Abstract: There are provided a dielectric composition and a multilayer ceramic electronic component using the same, the dielectric composition including dielectric grains having a perovskite structure represented by ABO3, wherein the dielectric grain includes a base material, in which at least one rare earth element RE is solid-solubilized in at least one of A and B, and a transition element TR, and a ratio (TR/RE) of the transition element to the rare earth element is 0.2 to 0.8.
    Type: Application
    Filed: April 26, 2013
    Publication date: August 7, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sung Hyung KANG, Ki Yong LEE, Han Nah CHANG, Du Won CHOI, Jae Hun CHOE, Min Sung SONG
  • Publication number: 20140212576
    Abstract: In a thin film capacitor or the like, a dielectric thin film-forming composition capable of improving leakage current characteristics; and a method of forming a dielectric thin film using this composition are provided. Regarding a dielectric thin film-forming composition for forming a dielectric thin film, the dielectric thin film is formed of a barium strontium titanate (BST)-based complex perovskite film, and the composition is doped with aluminum (Al). In addition, a doping amount of the aluminum (Al) is in a range of 0.1 at % to 15 at % with respect to 100 at % of perovskite A site atoms contained in the composition.
    Type: Application
    Filed: January 23, 2014
    Publication date: July 31, 2014
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Jun Fujii, Toshiaki Watanabe, Hideaki Sakurai, Nobuyuki Soyama
  • Publication number: 20140185183
    Abstract: There is provided a multilayer ceramic capacitor, including: a ceramic body including dielectric layers; first and second internal electrodes disposed to face each other with the dielectric layer interposed therebetween within the ceramic body; a first external electrode electrically connected to the first internal electrodes; and a second external electrode electrically connected to the second internal electrodes, wherein the dielectric layer includes 40 to 99 wt % of barium titanate (BaTiO3) powder having an average grain size of 0.1 ?m to 0.8 ?m and 1 to 60 wt % of barium titanate zirconate (Ba(Ti1-xZrx)O3) having an average grain size of 0.2 to 2.0 ?m.
    Type: Application
    Filed: March 14, 2013
    Publication date: July 3, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Sung PARK, Doo Young KIM, Jong Bong LIM, Chan Hee NAM, Seok Hyun YOON, Chang Hoon KIM
  • Publication number: 20140179508
    Abstract: Disclosed herein is a dielectric composition including: a dielectric ceramic represented by the following equation: X2Y2Ti4O12 (wherein X is Li, or Na, and Y is Nd, Sm or Bi); and any one additive selected from BaZ2Ti4O12 (wherein Z is Nd, Sm or Bi), (Ti0.55Zn0.15A0.3)O2 (wherein A is Ta or V), CaTiO3, and TiO2.
    Type: Application
    Filed: December 19, 2013
    Publication date: June 26, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Jeong Hyun PARK
  • Publication number: 20140135203
    Abstract: There are provided a dielectric composition and a preparation method thereof, the dielectric composition including: a first perovskite powder for a core represented by ABO3: and a second perovskite powder for a shell represented by ABO3, having an average particle diameter corresponding to ? to 1/10 of an average particle diameter of the first perovskite powder, and included in an amount of 1 to 70 parts by weight with respect to 100 parts by weight of the first perovskite powder, wherein particles of the second perovskite powder have pores having a volume fraction of 3 to 50 vol % therein. According to the present invention, there are provided a dielectric composition having excellent dielectric characteristics and electrical characteristics, and a preparation method thereof.
    Type: Application
    Filed: June 18, 2013
    Publication date: May 15, 2014
    Inventors: Chang Hak Choi, Chang Hoon Kim, Sang Min Youn, Kwang Hee Nam, Ki Myoung Yun, Hyung Joon Jeon, Jong Hoon Yoo
  • Patent number: 8715575
    Abstract: This invention relates to a method of making lead-free piezoelectric ceramic films. Specifically, the invention is directed to a method for fabricating lead-free piezoelectric free standing films having enhanced piezoelectric properties. The films may be used for a number of applications including incorporation in microelectronic devices such as energy harvesting devices and sensor technologies.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: May 6, 2014
    Assignee: Drexel University
    Inventors: Wei-Heng Shih, Wan Y. Shih, Huidong Li
  • Patent number: 8709960
    Abstract: Provided here is a method of producing a monolithic body from a porous matrix, comprising: (i) providing a porous matrix having interstitial spaces and comprising at least a first reactant; (ii) contacting the porous matrix with an infiltrating medium that carries at least a second reactant; (iii) allowing the infiltrating medium to infiltrate at least a portion of the interstitial spaces of the porous matrix under conditions that promote a reaction between the at least first reactant and the at least second reactant to provide at least a first product; and (iv) allowing the at least first product to form and fill at least a portion of the interstitial spaces of the porous matrix, thereby producing a monolithic body, wherein the monolithic body does not comprise barium titanate.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: April 29, 2014
    Assignee: Rutgers, The State University of New Jersey
    Inventors: Richard E. Riman, Vahit Atakan
  • Patent number: 8702885
    Abstract: A method of manufacturing ceramics includes: placing, on a base material, a first slurry in which a metal oxide powder is dispersed; applying a magnetic field to the first slurry to solidify the first slurry, thereby forming an under coat layer made of a first compact; placing, on the under coat layer, a second slurry containing a metal oxide powder constituting the ceramics; applying a magnetic field to the second slurry to solidify the second slurry, thereby forming a second compact to obtain a laminated body of the second compact and the under coat layer; and obtaining the ceramics made of the second compact by removing the under coat layer from the laminated body of the second compact and the under coat layer and then sintering the second compact, or sintering the laminated body of the second compact and the under coat layer and then removing the under coat layer.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: April 22, 2014
    Assignees: Canon Kabushiki Kaisha, University of Yamanashi
    Inventors: Takanori Matsuda, Tatsuo Furuta, Takayuki Watanabe, Jumpei Hayashi, Nobuhiro Kumada
  • Patent number: 8698380
    Abstract: Provided is a manufacturing method for preferentially-oriented oxide ceramics having a high degree of crystal orientation. The manufacturing method includes: obtaining slurry containing an oxide crystal B having magnetic anisotropy; applying a magnetic field to the oxide crystal B, and obtaining a compact of the oxide crystal B; and subjecting the compact to oxidation treatment to obtain preferentially-oriented oxide ceramics including a compact of an oxide crystal C having a crystal system that is different from a crystal system of one of a part and a whole of the oxide crystal B. By (1) reacting raw materials, (2) reducing the oxide crystal A, or (3) keeping the oxide crystal A at high temperature and quenching the oxide crystal A, the oxide crystal B is obtained to be used in the slurry.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 15, 2014
    Assignees: Canon Kabushiki Kaisha, University of Yamanashi
    Inventors: Takayuki Watanabe, Makoto Kubota, Jumpei Hayashi, Nobuhiro Kumada, Tomoaki Mochiduki
  • Publication number: 20140098457
    Abstract: There are provided a dielectric composition and a multilayer ceramic electronic component manufactured using the same, the dielectric composition including a dielectric grain having a perovskite structure represented by ABO3, wherein the dielectric grain has a core-shell structure in which a content of an additive in a shell is 15% or less, based on an average content of the additive distributed throughout the dielectric grain, so that the multilayer ceramic electronic component manufactured using the dielectric composition can have excellent reliability and secure a high dielectric constant.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 10, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sung Hyung KANG, Jae Sung PARK, Sang Huk KIM
  • Publication number: 20140098455
    Abstract: There are provided a dielectric composition and a multilayer ceramic electronic component manufactured using the same, the dielectirc composition including dielectric grains having a perovskite structure represented by ABO3, a portion of the dielectric grains having a core-shell structure, wherein dielectric grains having an average length of a core equal to or less than 250 nm and a ratio of the average length of the core to an average length of the dielectric grain below 0.8 may be 50% or more of the portion of dielectric grains having a core-shell structure, so that the multilayer ceramic electronic component manufactured using the dielectric composition can have excellent reliability and secure a high dielectric constant.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 10, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: SUNG HYUNG KANG, DU WON CHOI, MIN SUNG SONG
  • Publication number: 20140092525
    Abstract: There are provided a dielectric composition and a multilayer ceramic electronic component manufactured using the same, the dielectric composition including a dielectric grain having a perovskite structure represented by ABO3, wherein, when an imaginary line is drawn in a direction from a center of the dielectric grain to a grain boundary thereof, a content of rare earth elements in a region corresponding to 0.75 to 0.95% of the dielectric grain from the center of the dielectric grain may be 0.5 to 2.5 at %, based on 100 at % of a B-site ion, so that the multilayer ceramic electronic component manufactured using the dielectric composition can have excellent reliability and secure a high dielectric constant.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 3, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sung Hyung KANG, Doo Young KIM, Chang Hak CHOI
  • Patent number: 8675344
    Abstract: A high energy density multilayer ceramic capacitor, having at least two electrode layers and at least one substantially dense polycrystalline dielectric layer positioned therebetween. The at polycrystalline dielectric layer has an average grain size of less than about 300 nanometers, a particle size distribution of between about 150 nanometers and about 3 micrometers, and a maximum porosity of about 1 percent. The dielectric layer is selected from the group including TiO2, BaTiO3, Al2O3, ZrO2, lead zirconium titanate, and combinations thereof and has a breakdown strength of at least about 1100 kV per centimeter.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: March 18, 2014
    Inventor: Fatih Dogan
  • Patent number: 8673798
    Abstract: A dielectric ceramic and a laminated ceramic capacitor using the dielectric ceramic are achieved which provide favorable thermal shock resistance without damaging properties or characteristics such as dielectric properties, insulation properties, temperature characteristics, and characteristics in high temperature loading, even when the dielectric layers are reduced in thickness and the number of stacked layers increased. The dielectric ceramic contains, as its main constituent, a barium titanate based compound represented by the general formula ABO3, and a crystalline oxide containing Al, Mg, and Si is present as secondary phase grains in the dielectric ceramic.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: March 18, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Tomoyuki Nakamura
  • Publication number: 20140049877
    Abstract: There are provided a dielectric ceramic having large specific resistance and even capacitance characteristic at 150° C., as well as a laminated ceramic electronic component employing such a dielectric ceramic. A ceramic layer includes crystal grains, the ceramic layer containing a perovskite type compound containing Ba, Ca, Ti, and Zr, containing Si, and optionally containing Mn. When the total content of Ti and Zr is 1 molar part, the content of Mn is 0.015 molar part or less, the content of Si is 0.005 molar part or more and less than 0.03 molar part, the molar ratio x of Ca/(Ba+Ca) satisfies 0.05<x<0.20, and the molar ratio y of Zr/(Ti+Zr) satisfies 0.03<y<0.18. The crystal grains have an average grain size of less than 130 nm.
    Type: Application
    Filed: October 30, 2013
    Publication date: February 20, 2014
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Shoichiro Suzuki, Shinichi Yamaguchi
  • Patent number: 8652984
    Abstract: A dielectric ceramic composition comprising a main component and at least one or more subcomponent elements has a dielectric particle and a grain boundary. The dielectric particle has a main component phase substantially composed of the main component, and a diffusive phase around the main component phase where at least one selected from the subcomponent elements is diffused, a local minimal value of Cs is located at an outside edge side with respect to a position of the local maximum value of Cs, and Cs is increased from a position of the local minimal value of Cs toward the outside edge, when the dielectric particle is cut on an arbitrary cutting plane including the main component phase, and Cs is defined as a concentration of one or more elements selected from the subcomponent elements in an arbitrary position in the dielectric particle.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: February 18, 2014
    Assignee: TDK Corporation
    Inventors: Makoto Endo, Osamu Kido, Hirobumi Tanaka, Taisuke Masuko, Yusuke Sato
  • Patent number: 8652983
    Abstract: A hexagonal type barium titanate powder comprising barium titanate as a main component shown by a generic formula of (Ba1-?M?)A(Ti1-?Ga?)BO3 and having hexagonal structure wherein; an effective ionic radius of 12-coordinated “M” is ?25% or more to +25% or less with respect to an effective ionic radius of 12-coordinated Ba2+, and said A, B, ? and ? satisfy relations of 0.975<(A/B)?1.015, 0.0015??<0.005, 0.075???0.15.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: February 18, 2014
    Assignee: TDK Corporation
    Inventors: Shigekazu Hidaka, Tatsuya Ishii, Takeo Tsukada, Hidesada Natsui, Kenichiro Masuda