Patents by Inventor Akihiro Motoki

Akihiro Motoki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090279229
    Abstract: A method for manufacturing a multilayer ceramic electronic component includes a first substep of depositing precipitates primarily made of a specific metal on an end of each of internal electrodes exposed at a predetermined surface of a laminate and growing the precipitates to coalesce into a continuous plated sublayer, and a second substep of heat-treating the laminate including the plated sublayer at a temperature of at least about 800° C., wherein a plated layer including a plurality of plated sublayers is formed by continuously performing at least two cycles of the first substep and the second substep.
    Type: Application
    Filed: January 21, 2009
    Publication date: November 12, 2009
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihiro MOTOKI, Makoto OGAWA, Shunsuke TAKEUCHI, Kenichi KAWASAKI
  • Publication number: 20090280319
    Abstract: A method for manufacturing a monolithic ceramic electronic component includes a plating substep of depositing precipitates primarily composed of a specific metal on an end of each of internal electrodes exposed at a predetermined surface of a laminate and growing the precipitates to coalesce into a continuous plated layer, wherein the specific metal is different from that of the internal electrodes, and the same or substantially the same metal that defines the internal electrodes is distributed throughout the plated layer.
    Type: Application
    Filed: March 17, 2009
    Publication date: November 12, 2009
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Toshiyuki IWANAGA, Akihiro MOTOKI, Makoto OGAWA, Kenichi KAWASAKI, Shunsuke TAKEUCHI, Seiichi NISHIHARA, Shuji MATSUMOTO
  • Publication number: 20090268372
    Abstract: When external electrodes of a multilayer ceramic capacitor are formed by performing direct plating on surfaces at which internal electrodes are exposed without forming paste electrode layers, bonding forces of plating layers are relatively weak, and in addition, when glass particles are included in the plating layers, blisters are often generated. To overcome these problems, a multilayer ceramic capacitor is formed by performing electrolytic plating using a plating bath including glass particles, electrolytic plating layers including glass particles dispersed therein are formed as the external electrodes.
    Type: Application
    Filed: January 21, 2009
    Publication date: October 29, 2009
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Makoto OGAWA, Akihiro MOTOKI, Ichiro NAKAMURA, Norihiro YOSHIKAWA, Toshiyuki IWANAGA, Kenichi KAWASAKI, Shunsuke TAKEUCHI
  • Publication number: 20090268374
    Abstract: A multilayer ceramic electronic component includes a laminate including a stack of a plurality of ceramic layers and a plurality of internal electrodes extending along interfaces between the ceramic layers, and a plurality of external electrodes electrically connecting the internal electrodes exposed at surfaces of the laminate. Each external electrode includes a plating layer at least at the portion directly connected to the internal electrodes. The plating layer has a compressive film stress of about 100 MPa or less or a tensile film stress of about 100 MPa or less.
    Type: Application
    Filed: January 15, 2009
    Publication date: October 29, 2009
    Applicant: Murata Manufacturing Co. Ltd.
    Inventors: Akihiro Motoki, Makoto Ogawa, Shunsuke Takeuchi, Kenichi Kawasaki
  • Patent number: 7589951
    Abstract: A laminated body is prepared, in which at an end surface at which internal electrodes are exposed, the internal electrodes disposed adjacently are electrically isolated from each other, and a distance between the internal electrodes disposed adjacently is about 20 ?m or less when measured along the thickness direction of an insulator layer, and a withdrawn-depth of the internal electrodes is about 1 ?m or less when measured from the end surface. In a step of electroless plating, plating deposits formed at the end portions of the plurality of internal electrodes are increased in size so as to be connected to each other.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: September 15, 2009
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tatsuo Kunishi, Makoto Ogawa, Akihiro Motoki
  • Patent number: 7589952
    Abstract: A multilayer electronic device includes a laminate and an external electrode that is formed on an end surface of the laminate after a plurality of conductive particles having a particle diameter of about 1 ?m or more is adhered to the end surface of the laminate, for example, by a sandblast method or a brush polishing method. The external electrode is defined by a plating film that is formed by electroplating or electroless plating.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: September 15, 2009
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akihiro Motoki, Kenichi Kawasaki, Makoto Ogawa, Shigeyuki Kuroda, Tatsuo Kunishi
  • Publication number: 20090226705
    Abstract: A method for manufacturing a multilayer electronic component includes a step of preparing a laminate which includes a plurality of stacked insulator layers and a plurality of internal electrodes extending along the interfaces between the insulator layers, and in which an end of each of the plurality of internal electrodes is exposed at a predetermined surface corresponding to one of the first and second end surfaces; a step of forming external electrodes on the predetermined surfaces; and a step of forming thick-film edge electrodes at edge portions. The step of forming external electrodes includes a step of attaching a plurality of conductive particles having a particle size of about 1 ?m or more to the predetermined surfaces of the laminate, and a step of performing plating directly on the predetermined surfaces to which the conductive particles are attached.
    Type: Application
    Filed: June 20, 2008
    Publication date: September 10, 2009
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihiro Motoki, Makoto Ogawa, Kenichi Kawasaki, Shunsuke Takeuchi
  • Publication number: 20090161293
    Abstract: A multilayer ceramic electronic component including thin external terminal electrodes each having a superior bonding force to a ceramic base body is provided. In order to form the external terminal electrodes, after Cu plating films are deposited on exposed portions of internal electrodes by direct plating on a ceramic base body, a Cu liquid phase, an O2-containing liquid phase, and a Cu solid phase are generated between the Cu plating film and the ceramic base body by a heat treatment, so that Cu oxides are dispersed in the Cu plating film, at least near an interface with the ceramic base body. Since the Cu oxides function as an adhesive, a bonding force of the Cu plating film to the ceramic base body can be increased, and hence the external terminal electrode having a superior bonding force to the ceramic base body can be obtained.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 25, 2009
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Shunsuke Takeuchi, Kenichi Kawasaki, Akihiro Motoki, Makoto Ogawa, Shuji Matsumoto, Seiichi Nishihara
  • Publication number: 20090103240
    Abstract: A capacitor array includes mutually opposed first and second internal electrodes having a first capacitance portion and a second capacitance portion, respectively, a first lead portion and a second lead portion, respectively, which are electrically connected to a first outer terminal electrode and a second outer terminal electrode, and a first protrusion portion and a second protrusion portion, respectively, which partially protrude toward the second outer terminal electrode and the first outer terminal electrode. The outer terminal electrodes have plating films directly connected to the internal electrodes. The plating film is formed by electrolytic plating. In the electrolytic plating, deposition of plating proceeds while being prevented from spreading in width directions of the individual side surfaces by electric fields generated from the protrusion portions toward the vicinities of exposure portions of the respective lead portions on the side surfaces.
    Type: Application
    Filed: October 10, 2008
    Publication date: April 23, 2009
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Katsumori Nagamiya, Atsushi Ishida, Akihiro Motoki
  • Publication number: 20090049679
    Abstract: A method for manufacturing a ceramic electronic component having excellent solderability is provided. In this method, the elution of barium from the ceramic electronic component and the adhesion of ceramic electronic components in tin plating are reduced. The method for manufacturing a ceramic electronic component includes the steps of providing an electronic component of barium-containing ceramic and forming an electrode on the outer surface of the electronic component, the electrode being electroplated with tin. In this method, a plating bath used in the tin plating has a tin ion concentration A in the range of 0.03 to 0.51 mol/L, a sulfate ion concentration B in the range of 0.005 to 0.31 mol/L, a molar ratio B/A of less than one, and a pH in the range of 6.1 to 10.5.
    Type: Application
    Filed: February 1, 2006
    Publication date: February 26, 2009
    Applicant: MURATA MANUFACTURING CO., LTD
    Inventors: Akihiro Motoki, Makoto Ogawa, Seiichi Matsumoto, Yoshihiko Takano, Tatsuo Kunishi
  • Publication number: 20090052114
    Abstract: A multilayer electronic component includes a base body, internal electrodes disposed inside the base body and extending to exterior surfaces thereof, and terminal electrodes provided on the exterior surfaces of the base body and connected to the internal electrodes. The terminal electrodes include first electrode layers defined by plating layers, and preferably electroplating layer, and second electrode layers made of a conductive resin and provided on the first electrode layers.
    Type: Application
    Filed: November 3, 2008
    Publication date: February 26, 2009
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihiro MOTOKI, Makoto OGAWA, Yuji UKUMA
  • Publication number: 20080239617
    Abstract: A method for manufacturing a laminated ceramic capacitor includes a step of preparing a laminate which has a first principal surface, a second principal surface, a first end surface, a second end surface, a first side surface, and a second side surface and which includes insulating layers and internal electrodes having end portions exposed at the first or second end surface; a step of forming external electrodes on the first and second end surfaces such that plating deposits are formed on the exposed end portions of the internal electrodes so as to be connected to each other; and a step of forming thick end electrodes electrically connected to the external electrodes such that a conductive paste is applied onto edge portions of the first and second principal surfaces and first and second side surfaces of the laminate and then baked.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 2, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihiro MOTOKI, Kenichi KAWASAKI, Makoto OGAWA, Shigeyuki KURODA, Shunsuke TAKEUCHI, Hideyuki KASHIO
  • Publication number: 20080225462
    Abstract: A multilayer electronic device includes a laminate and an external electrode that is formed on an end surface of the laminate after a plurality of conductive particles having a particle diameter of about 1 ?m or more is adhered to the end surface of the laminate, for example, by a sandblast method or a brush polishing method. The external electrode is defined by a plating film that is formed by electroplating or electroless plating.
    Type: Application
    Filed: April 25, 2008
    Publication date: September 18, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihiro MOTOKI, Kenichi KAWASAKI, Makoto OGAWA, Shigeyuki KURODA, Tatsuo KUNISHI
  • Publication number: 20080210564
    Abstract: A method for manufacturing a multilayer electronic component, includes the steps of preparing a laminate including a plurality of insulating layers laminated to each other and a plurality of internal electrodes formed along interfaces between the insulating layers, edges of the internal electrodes being exposed at a predetermined surface of the laminate, and forming an external electrode on the predetermined surface so as to electrically connect the edges of the internal electrodes, which are exposed at the predetermined surface of the laminate.
    Type: Application
    Filed: April 28, 2008
    Publication date: September 4, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihiro MOTOKI, Makoto OGAWA, Kenichi KAWASAKI, Shunsuke TAKEUCHI, Shigeyuki KURODA
  • Publication number: 20080151470
    Abstract: A method for manufacturing a laminated electronic component is performed such that a water-repellent agent is applied to end surfaces at which ends of internal electrodes are exposed so as to be filled in spaces along interfaces between insulating layers and the internal electrodes. Subsequently, an abrading step is performed such that the internal electrodes are sufficiently exposed at the end surfaces and an excess water-repellent agent is removed therefrom to enable plating films to be directly formed on the end surfaces.
    Type: Application
    Filed: March 6, 2008
    Publication date: June 26, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihiro MOTOKI, Makoto OGAWA, Tatsuo KUNISHI, Jun NISHIKAWA, Yoshihiko TAKANO, Shigeyuki KURODA
  • Publication number: 20080145551
    Abstract: An electroless plating step for forming external electrodes includes preparing a plating solution including a reducing agent and metal ions having a more electochemically positive deposition potential than the oxidation-reduction potential of the reducing agent, placing a laminate for a multilayer electronic component together with a conductive medium having catalytic activity for an oxidation reaction of the reducing agent in a vessel, and stirring the laminate and the conductive medium in the plating solution by rotation, shaking, inclination, or vibration. Electroless plating proceeds to connect each other plating deposits deposited on the ends of a plurality of internal electrodes.
    Type: Application
    Filed: March 4, 2008
    Publication date: June 19, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Tatsuo KUNISHI, Makoto OGAWA, Akihiro MOTOKI
  • Publication number: 20080123248
    Abstract: A laminate is prepared in which adjacent internal electrodes are electrically insulated from each other at an end surface at which the internal electrodes are exposed, a space between the adjacent internal electrodes, which is measured in the thickness direction of insulating layers, is about 10 ?m or less, and a withdrawn distance of the adjacent internal electrodes from the end surface is about 1 ?m or less. In an electroplating step, electroplating deposits deposited on the ends of the adjacent internal electrodes are grown so as to be connected to each other.
    Type: Application
    Filed: February 13, 2008
    Publication date: May 29, 2008
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Tatsuo Kunishi, Yoshihiko Takano, Shigeyuki Kuroda, Akihiro Motoki, Hideyuki Kashio, Takashi Noji
  • Publication number: 20080123249
    Abstract: A laminated body is prepared, in which at an end surface at which internal electrodes are exposed, the internal electrodes disposed adjacently are electrically isolated from each other, and a distance between the internal electrodes disposed adjacently is about 20 ?m or less when measured along the thickness direction of an insulator layer, and a withdrawn-depth of the internal electrodes is about 1 ?m or less when measured from the end surface. In a step of electroless plating, plating deposits formed at the end portions of the plurality of internal electrodes are increased in size so as to be connected to each other.
    Type: Application
    Filed: February 13, 2008
    Publication date: May 29, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Tatsuo Kunishi, Makoto Ogawa, Akihiro Motoki
  • Publication number: 20070174605
    Abstract: A data processing device includes a memory, a processing unit, a logic element, a first database and a management unit. The memory stores a plurality of software modules which processes input data. The processing unit enables to execute the plurality of software module. The logic element enables to configure a plurality of hardware modules, which can perform processings equivalent to those performed by the plurality of software module, using a dynamic reconfiguration. The first database stores configuration information indicating a configuration of the plurality of hardware modules when the plurality of hardware modules is set to the logic element.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 26, 2007
    Applicant: NEC CORPORATION
    Inventors: Satoshi KAMIYA, Hiroshi UENO, Akihiro MOTOKI, Takeo HAYASHI
  • Publication number: 20070074214
    Abstract: A computer system includes a central processing unit (CPU), a plurality of dedicated processing units (DPUs) for transferring therebetween event descriptors for allocating CPU processings to the DPUs. The computer system includes a plurality of event controllers each associated a corresponding one of the DPUs or CPU. The event controller receives the event descriptors issued by the DPUs and enters the event descriptors in a representative-vent queue in the order of the priority of the event descriptors.
    Type: Application
    Filed: September 12, 2006
    Publication date: March 29, 2007
    Inventors: Hiroshi Ueno, Satoshi Kamiya, Koichi Sato, Akihiro Motoki, Kiyohisa Ichino