Patents by Inventor Yoji Yamamoto

Yoji Yamamoto 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).

  • Patent number: 8971015
    Abstract: An electronic component includes a laminate including a plurality of insulating layers that are laminated on each other. A capacitor conductor is embedded in the laminate and includes an exposed portion exposed between the insulating layers at a predetermined surface of the laminate. An external electrode is provided on the predetermined surface by direct plating so as to cover the exposed portion. An outer edge of the external electrode is spaced away from the exposed portion by about 0.8 ?m or more.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: March 3, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Syunsuke Takeuchi, Yoji Yamamoto, Akihiro Motoki, Makoto Ogawa, Masahito Saruban
  • Patent number: 8717739
    Abstract: A ceramic electronic component includes a substantially rectangular ceramic element assembly, a first external electrode, and a second external electrode. The first external electrode includes at least one plating film including a first plating film disposed directly on the ceramic element assembly from outside. Likewise, the second external electrode includes at least one plating film including a second plating film disposed directly on the ceramic element assembly from outside. The first and second plating films each have a surface area per unit area equal to or larger than about 1.02 in plan view.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: May 6, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yoji Yamamoto, Akihiro Motoki, Syunsuke Takeuchi, Makoto Ogawa, Toshiyuki Iwanaga
  • Publication number: 20130250474
    Abstract: An electronic component includes a laminate including a plurality of insulating layers that are laminated on each other. A capacitor conductor is embedded in the laminate and includes an exposed portion exposed between the insulating layers at a predetermined surface of the laminate. An external electrode is provided on the predetermined surface by direct plating so as to cover the exposed portion. An outer edge of the external electrode is spaced away from the exposed portion by about 0.8 ?m or more.
    Type: Application
    Filed: May 22, 2013
    Publication date: September 26, 2013
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Syunsuke TAKEUCHI, Yoji YAMAMOTO, Akihiro MOTOKI, Makoto OGAWA, Masahito SARUBAN
  • Patent number: 8508913
    Abstract: In a method of manufacturing a laminate type electronic component, when a heat treatment is carried out after plating films, which at least partially define external electrodes, are formed by growing plated depositions deposited on exposed ends of a plurality of internal electrodes in a component main body, the presence of the plating films may not only interfere with moisture release, but may also cause blisters or bulge defects in the plating films, while moisture such as a plating solution in the component main body is removed by evaporation. To avoid such problems, cuts to divide exposed ends into multiple sections are formed in extending sections of internal electrodes. Thus, plating films include slits extending in the stacking direction at locations corresponding to positions of the cuts.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: August 13, 2013
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masahito Saruban, Makoto Ogawa, Wataru Ogawa, Akihiro Motoki, Syunsuke Takeuchi, Yoji Yamamoto
  • Patent number: 8482899
    Abstract: A laminate includes ceramic layers laminated to each other. Internal conductors are embedded in the laminate and include exposed portions that are exposed between the ceramic layers at a lower surface and an upper surface of the laminate. External electrodes are directly plated on the lower surface and the upper surface so as to cover the respective exposed portions. Regions of the lower surface at which the exposed portions are provided are arranged to protrude from the other regions of the lower surface, and regions of the upper surface at which the exposed portions are provided are arranged to protrude from the other regions of the upper surface.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: July 9, 2013
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yoji Yamamoto, Shunsuke Takeuchi, Akihiro Motoki, Makoto Ogawa, Masahito Saruban
  • Patent number: 8472160
    Abstract: An electronic component includes a laminate including a plurality of insulating layers that are laminated on each other. A capacitor conductor is embedded in the laminate and includes an exposed portion exposed between the insulating layers at a predetermined surface of the laminate. An external electrode is provided on the predetermined surface by direct plating so as to cover the exposed portion. An outer edge of the external electrode is spaced away from the exposed portion by about 0.8 ?m or more.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: June 25, 2013
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shunsuke Takeuchi, Yoji Yamamoto, Akihiro Motoki, Makoto Ogawa, Masahito Saruban
  • Publication number: 20120236461
    Abstract: A ceramic electronic component includes a substantially rectangular ceramic element assembly, a first external electrode, and a second external electrode. The first external electrode includes at least one plating film including a first plating film disposed directly on the ceramic element assembly from outside. Likewise, the second external electrode includes at least one plating film including a second plating film disposed directly on the ceramic element assembly from outside. The first and second plating films each have a surface area per unit area equal to or larger than about 1.02 in plan view.
    Type: Application
    Filed: March 14, 2012
    Publication date: September 20, 2012
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Yoji YAMAMOTO, Akihiro MOTOKI, Syunsuke TAKEUCHI, Makoto OGAWA, Toshiyuki IWANAGA
  • Publication number: 20120169180
    Abstract: In a method of manufacturing a laminate type electronic component, when a heat treatment is carried out after plating films, which at least partially define external electrodes, are formed by growing plated depositions deposited on exposed ends of a plurality of internal electrodes in a component main body, the presence of the plating films may not only interfere with moisture release, but may also cause blisters or bulge defects in the plating films, while moisture such as a plating solution in the component main body is removed by evaporation. To avoid such problems, cuts to divide exposed ends into multiple sections are formed in extending sections of internal electrodes. Thus, plating films include slits extending in the stacking direction at locations corresponding to positions of the cuts.
    Type: Application
    Filed: December 27, 2011
    Publication date: July 5, 2012
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Masahito SARUBAN, Makoto OGAWA, Wataru OGAWA, Akihiro MOTOKI, Syunsuke TAKEUCHI, Yoji YAMAMOTO
  • Publication number: 20110235232
    Abstract: An electronic component includes a laminate including a plurality of insulating layers that are laminated on each other. A capacitor conductor is embedded in the laminate and includes an exposed portion exposed between the insulating layers at a predetermined surface of the laminate. An external electrode is provided on the predetermined surface by direct plating so as to cover the exposed portion. An outer edge of the external electrode is spaced away from the exposed portion by about 0.8 ?m or more.
    Type: Application
    Filed: March 18, 2011
    Publication date: September 29, 2011
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Syunsuke Takeuchi, Yoji Yamamoto, Akihiro Motoki, Makoto Ogawa, Masahito Saruban
  • Publication number: 20110235234
    Abstract: A laminate includes ceramic layers laminated to each other. Internal conductors are embedded in the laminate and include exposed portions that are exposed between the ceramic layers at a lower surface and an upper surface of the laminate. External electrodes are directly plated on the lower surface and the upper surface so as to cover the respective exposed portions. Regions of the lower surface at which the exposed portions are provided are arranged to protrude from the other regions of the lower surface, and regions of the upper surface at which the exposed portions are provided are arranged to protrude from the other regions of the upper surface.
    Type: Application
    Filed: March 28, 2011
    Publication date: September 29, 2011
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Yoji YAMAMOTO, Syunsuke TAKEUCHI, Akihiro MOTOKI, Makoto OGAWA, Masahito SARUBAN
  • Patent number: 7414356
    Abstract: A cathode structure comprises a heater including a columnar ceramic body and a heating wire that is partially buried in the ceramic body, and a cathode unit disposed at a first end surface of the ceramic body. The heating wire leads out from a second end surface of the ceramic body.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: August 19, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoji Yamamoto, Mika Yamagishi, Satoru Nakagawa
  • Patent number: 6992427
    Abstract: A cathode sleeve structure for housing a heater. The cathode sleeve structure includes: a case member that is cylindrical and an end thereof is open; a plurality of supporting members that extend radially from vicinities of the end of the case member; and a linkage member that connects the plurality of supporting members. The case member, the plurality of supporting members, and the linkage member are formed as one piece.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: January 31, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mika Yamagishi, Satoru Nakagawa, Yoji Yamamoto
  • Publication number: 20050171094
    Abstract: A pyrrolo[3,2-d]pyrimidine derivative represented by the formula (I) or a pharamaceutically acceptable salt of the derivative. The derivative or salt is useful as a GSK-3 inhibitor.
    Type: Application
    Filed: February 24, 2003
    Publication date: August 4, 2005
    Inventors: Kenichiro Kataoka, Tomomi Kosugi, Toshihiro Ishii, Takahiro Takeuchi, Takaharu Tsutsumi, Akira Nakano, Yoji Yamamoto, Noboru Yoshioka
  • Patent number: 6828717
    Abstract: The present invention provides an electron gun which includes an electrically non-conductive substrate through which a perforation is provided. The electron gun is characterized in that a cathode-structure supporting member is welded to power-feeding members that are bonded to a stem side of the electrically non-conductive substrate, the cathode-structure supporting member supplying power to a heater included in a cathode structure. Structured as such, it becomes possible to reduce the size of the electron gun in the tube-axis direction, since an additional member for supporting the heater becomes unnecessary. In addition, the cathode-structure supporting member makes the electrically non-conductive substrate to work as a wiring board for supplying voltage to the cathode, thereby realizing a slim cathode-ray tube. Further, the above structure improves accuracy in the assembly process of the electron gun, thereby improving the yield factor.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: December 7, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoji Yamamoto, Satoru Nakagawa, Mika Yamagishi
  • Publication number: 20040207307
    Abstract: A cathode structure comprises a heater including a columnar ceramic body and a heating wire that is partially buried in the ceramic body, and a cathode unit disposed at a first end surface of the ceramic body. The heating wire leads out from a second end surface of the ceramic body.
    Type: Application
    Filed: January 12, 2004
    Publication date: October 21, 2004
    Inventors: Yoji Yamamoto, Mika Yamagishi, Satoru Nakagawa
  • Patent number: 6676968
    Abstract: A medicinal composition containing one or more compounds selected from the compounds represented by the following formula (I), salts of these compounds, solvates of these compounds and solvates of these salts and being capable of reducing the contact of the compounds with the components in the bile or pancreatic juice.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: January 13, 2004
    Assignee: Teijin Limited
    Inventors: Kiyoyuki Sakon, Masahiko Narasaki, Kentaro Fujinaga, Yoji Yamamoto, Hiroaki Mitsuhashi, Kazuoki Tsuruta, Hirofumi Tanabe, Yoshiaki Igarashi
  • Publication number: 20030173886
    Abstract: A cathode sleeve structure for housing a heater. The cathode sleeve structure comprises: a case member that is cylindrical and an end thereof is open; a plurality of supporting members that extend radially from vicinities of the end of the case member; and a linkage member that connects the plurality of supporting members. The case member, the plurality of supporting members, and the linkage member are formed as one piece.
    Type: Application
    Filed: December 17, 2002
    Publication date: September 18, 2003
    Inventors: Mika Yamagishi, Satoru Nakagawa, Yoji Yamamoto
  • Publication number: 20030080668
    Abstract: The present invention provides an electron gun which includes an electrically non-conductive substrate through which a perforation is provided. The electron gun is characterized in that a cathode-structure supporting member is welded to power-feeding members that are bonded to a stem side of the electrically non-conductive substrate, the cathode-structure supporting member supplying power to a heater included in a cathode structure. Structured as such, it becomes possible to reduce the size of the electron gun in the tube-axis direction, since an additional member for supporting the heater becomes unnecessary. In addition, the cathode-structure supporting member makes the electrically non-conductive substrate to work as a wiring board for supplying voltage to the cathode, thereby realizing a slim cathode-ray tube. Further, the above structure improves accuracy in the assembly process of the electron gun, thereby improving the yield factor.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 1, 2003
    Inventors: Yoji Yamamoto, Satoru Nakagawa, Mika Yamagishi
  • Publication number: 20020044281
    Abstract: Amount of sub-micron particles in fluid such as ultra pure water classified each range of particle dimensions are detected by a simple apparatus in which a light beam from a coherent light source (1) is converged (2) in such a manner that the light beam is focused in a stream (3) of particle-containing fluid, the light passed through the stream and diffracted by the particles is received by a photo-detector (4) which is positioned at an opposite side of the coherent light source with respect to the stream and substantially on an optical axis of the light beam, so that the number of particles in the stream is distinguished into plural ranges according to each frequencies of the signals emitted from the photo-detector and counting each numbers of the particles contained the ranges.
    Type: Application
    Filed: August 23, 2001
    Publication date: April 18, 2002
    Inventors: Akira Sakamoto, Yasuhiro Hayashi, Yoshihisa Yamashita, Yoji Yamamoto
  • Patent number: 6300711
    Abstract: An indirectly heated cathode that can enhance the withstand voltage and the efficiency of radiating heat from a heater to a tubular sleeve, and a cathode ray tube using such a cathode. The indirectly heated cathode comprises a hot cathode emitting electrons at one end, and a tubular sleeve including a high melting point metal and having a heater inside. A thermal absorption layer is formed on the inside face of the tubular sleeve and the thermal absorption layer contains a boron compound.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: October 9, 2001
    Assignee: Matsushita Electronics Corporation
    Inventors: Yoji Yamamoto, Katsuyuki Yamashita