Patents by Inventor Shuji Nakazawa

Shuji Nakazawa 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: 12136640
    Abstract: There is provided a solid-state imaging device including: a first semiconductor layer including a photoelectric converter and an electric charge accumulation section for each pixel, the electric charge accumulation section in which a signal electric charge generated in the photoelectric converter is accumulated; a pixel separation section that is provided in the first semiconductor layer, and partitions a plurality of the pixels from each other; a second semiconductor layer that is provided with a pixel transistor and is stacked on the first semiconductor layer, the pixel transistor that reads the signal electric charge of the electric charge accumulation section; and a first shared coupling section that is provided between the second semiconductor layer and the first semiconductor layer, and is provided to straddle the pixel separation section and is electrically coupled to a plurality of the electric charge accumulation sections.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: November 5, 2024
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Keiichi Nakazawa, Koichiro Zaitsu, Nobutoshi Fujii, Yohei Hiura, Shigetaka Mori, Shintaro Okamoto, Keiji Ohshima, Shuji Manda, Junpei Yamamoto, Yui Yuga, Shinichi Miyake, Tomoki Kambe, Ryo Ogata, Tatsuki Miyaji, Shinji Nakagawa, Hirofumi Yamashita, Yasushi Hamamoto, Naohiko Kimizuka
  • Patent number: 12010793
    Abstract: A ceramic circuit board includes: a ceramic board; and an internal conductor disposed in the ceramic board, in which the ceramic board contains glass, a willemite filler, and an alumina filler, and an average particle diameter of the willemite filler is larger than an average particle diameter of the alumina filler.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: June 11, 2024
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Hiroaki Hara, Shuji Nakazawa
  • Publication number: 20220279649
    Abstract: A ceramic circuit board includes: a ceramic board; and an internal conductor disposed in the ceramic board, in which the ceramic board contains glass, a willemite filler, and an alumina filler, and an average particle diameter of the willemite filler is larger than an average particle diameter of the alumina filler.
    Type: Application
    Filed: July 30, 2020
    Publication date: September 1, 2022
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Hiroaki HARA, Shuji NAKAZAWA
  • Patent number: 8916905
    Abstract: It is an object to provide a photoelectric conversion device with high photoelectric conversion efficiency that improves reliability by increasing contact force between a light absorbing layer and an electrode layer. The photoelectric conversion device includes an electrode layer, and a light absorbing layer located on the electrode layer. The light absorbing layer contains a compound semiconductor. The light absorbing layer comprises a first layer close to the electrode layer and a second layer located on the first layer. The first layer has a void ratio lower than that of the second layer.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: December 23, 2014
    Assignee: KYOCERA Corporation
    Inventors: Shintaro Kubo, Shuji Nakazawa, Rui Kamada, Seiji Oguri, Shinnosuke Ushio, Shuichi Kasai, Seiichiro Inai
  • Publication number: 20140345693
    Abstract: A photoelectric conversion device and a method for producing a photoelectric conversion device are disclosed. The photoelectric conversion device includes a light-absorbing layer. The light-absorbing layer contains a chalcopyrite-based compound, and has a peak intensity ratio IB/IA in a range of 3 to 9, where IA represents a peak intensity of the peak formed by combining a peak of a (220) plane and a peak of a (204) plane in X-ray diffraction, and IB represents a peak intensity of a (112) plane.
    Type: Application
    Filed: August 17, 2012
    Publication date: November 27, 2014
    Applicant: KYOCERA CORPORATION
    Inventors: Hideaki Asao, Shintaro Kubo, Shuji Nakazawa, Yusuke Miyamichi, Tatsuya Domoto, Keizo Takeda, Kazuki Yamada, Kotaro Tanigawa, Hiromitsu Ogawa
  • Publication number: 20140224333
    Abstract: A photoelectric converter is disclosed. The photoelectric converter includes a light-absorbing layer. The light-absorbing layer includes a plurality of crystalline grains. The grains contain a Group I-III-VI chalcopyrite compound semiconductor. The light-absorbing layer contains oxygen and an average atomic concentration of oxygen at grain boundaries of the light-absorbing layer is larger than the average atomic concentration of oxygen in the grains of the light-absorbing layer.
    Type: Application
    Filed: July 27, 2012
    Publication date: August 14, 2014
    Applicant: KYOCERA CORPORATION
    Inventors: Shintaro Kubo, Hideaki Asao, Seiichiro Inai, Hisakazu Ninomiya, Shuji Nakazawa
  • Patent number: 8709860
    Abstract: The object is to improve the conversion efficiency of a photoelectric conversion device. This object can be achieved by a photoelectric conversion device including an electrode and a semiconductor layer which is provided on one main surface of the electrode and contains a I-III-VI group compound semiconductor, wherein the semiconductor layer includes a connection layer that is located at a position on the one main surface side of the electrode and has a tendency that, the closer to the one main surface, the greater a quotient obtained by dividing an amount of substance of a I-B group element by an amount of substance of a III-B group element becomes.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: April 29, 2014
    Assignee: KYOCERA Corporation
    Inventors: Shintaro Kubo, Rui Kamada, Yusuke Miyamichi, Shuji Nakazawa
  • Publication number: 20130037901
    Abstract: It is an object to provide a photoelectric conversion device with high photoelectric conversion efficiency that improves reliability by increasing contact force between a light absorbing layer and an electrode layer. The photoelectric conversion device includes an electrode layer, and a light absorbing layer located on the electrode layer. The light absorbing layer contains a compound semiconductor. The light absorbing layer comprises a first layer close to the electrode layer and a second layer located on the first layer. The first layer has a void ratio lower than that of the second layer.
    Type: Application
    Filed: April 22, 2011
    Publication date: February 14, 2013
    Applicant: KYOCERA CORPORATION
    Inventors: Shintaro Kubo, Shuji Nakazawa, Rui Kamada, Seiji Oguri, Shinnosuke Ushio, Shuichi Kasai, Seiichiro Inai
  • Publication number: 20130026588
    Abstract: The object is to improve the conversion efficiency of a photoelectric conversion device. This object can be achieved by a photoelectric conversion device including an electrode and a semiconductor layer which is provided on one main surface of the electrode and contains a I-III-VI group compound semiconductor, wherein the semiconductor layer includes a connection layer that is located at a position on the one main surface side of the electrode and has a tendency that, the closer to the one main surface, the greater a quotient obtained by dividing an amount of substance of a I-B group element by an amount of substance of a III-B group element becomes.
    Type: Application
    Filed: April 12, 2011
    Publication date: January 31, 2013
    Applicant: KYOCERA CORPORATION
    Inventors: Shintaro Kubo, Rui Kamada, Yusuke Miyamichi, Shuji Nakazawa
  • Patent number: 8318330
    Abstract: A substrate for a magnetic read/write head is disclosed. The substrate can reduce detachment of crystal grains when the substrate is machined. The substrate may be machined when the substrate is cut into strips or a flow path surface recess is formed to produce the magnetic read/write head. The reduced detachment of crystal grains makes the magnetic read/write head more resilient to chipping, which allows the magnetic read/write head to have a lower and more stable flying height that increases recording density.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: November 27, 2012
    Assignee: Kyocera Corporation
    Inventors: Yucong Wang, Shuji Nakazawa, Yuuya Nakao, Takuya Gentsu, Nobuyuki Horiuchi
  • Patent number: 8173281
    Abstract: A ceramic sintered body contains Al2O3 crystal grains, internal TiC crystal grains existing in the Al2O3 crystal grains and external TiC crystal grains other than the internal TiC crystal grains. The Al2O3 crystal grains and the external TiC crystal grains retain stress caused by the difference in thermal expansion coefficient remaining after sintering, so that the Al2O3 crystal grains and the external TiC crystal grains pull each other in the interface therebetween. As a result, when the ceramic sintered body is machined, micro-cracks generated in the interface can easily grow due to the residual stress in addition to the shearing force caused by the machining operation, so that machinability is improved.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: May 8, 2012
    Assignee: Kyocera Corporation
    Inventors: Shuji Nakazawa, Yucong Wang, Masahide Akiyama, Takuya Gentsu, Toshiyuki Sue
  • Publication number: 20110308616
    Abstract: It is aimed to provide a photoelectric conversion device having high adhesion between a light-absorbing layer and an electrode layer as well as high photoelectric conversion efficiency. In order to achieve this object, the photoelectric conversion device includes a first layer and a second layer provided on the first layer. Further, in the photoelectric conversion device, the first layer includes an electrode layer, the second layer includes a light-absorbing layer including a group I-III-VI compound semiconductor, the light-absorbing layer includes a first region and a second region located farther from the first layer than the first region, and an average grain diameter of crystal grains in the second region is larger than an average grain diameter of crystal grains in the first region.
    Type: Application
    Filed: September 17, 2010
    Publication date: December 22, 2011
    Applicant: KYOCERA CORPORATION
    Inventors: Rui Kamada, Shuji Nakazawa, Nobuyuki Horiuchi, Shintaro Kubo, Yusuke Miyamichi
  • Publication number: 20100315743
    Abstract: A substrate for a magnetic read/write head is disclosed. The substrate can reduce detachment of crystal grains when unexpected vibrations or impacts are applied. The substrate may be machined when the substrate is cut into strips or a flow path surface recess is formed to produce the magnetic read/write head. The reduced detachment of crystal grains makes the magnetic read/write head more resilient to chipping, which allows the magnetic read/write head to have good performance in read/write.
    Type: Application
    Filed: April 29, 2010
    Publication date: December 16, 2010
    Applicant: KYOCERA Corporation
    Inventors: Yucong WANG, Shuji Nakazawa, Takuya Gentsu
  • Publication number: 20100091404
    Abstract: A substrate for a magnetic read/write head is disclosed. The substrate can reduce detachment of crystal grains when the substrate is machined. The substrate may be machined when the substrate is cut into strips or a flow path surface recess is formed to produce the magnetic read/write head. The reduced detachment of crystal grains makes the magnetic read/write head more resilient to chipping, which allows the magnetic read/write head to have a lower and more stable flying height that increases recording density.
    Type: Application
    Filed: December 18, 2009
    Publication date: April 15, 2010
    Applicant: KYOCERA CORPORATION
    Inventors: Yucong WANG, Shuji Nakazawa, Yuuya Nakao, Takuya Gentsu, Nobuyuki Horiuchi
  • Publication number: 20100061013
    Abstract: Greater emphasis has been placed on smoothness of the floating surface for the applications with floating height of 10 nm or less. To obtain a smooth floating surface, it must be polished with diamond abrasive having a mean particle size of 0.1 ?m or less, and conventional ceramic sintered body has poor machinability and it is impossible to use the magnetic heads made of this ceramic sintered body at a floating height of 10 nm or less. The ceramic sintered body according to the present invention contains Al2O3 crystal grains, internal TiC crystal grains existing in the Al2O3 crystal grains and external TiC crystal grains other than the internal TiC crystal grains. The Al2O3 crystal grains and the external TiC crystal grains retain stress caused by the difference in thermal expansion coefficient remaining after sintering, so that the Al2O3 crystal grains and the external TiC crystal grains pull each other in the interface therebetween.
    Type: Application
    Filed: November 7, 2007
    Publication date: March 11, 2010
    Applicant: KYOCERA CORPORATION
    Inventors: Shuji Nakazawa, Yucong Wang, Masahide Akiyama, Takuya Gentsu, Toshiyuki Sue
  • Patent number: 6897172
    Abstract: The present invention provides a dielectric ceramic composition comprising: 30 to 90% by weight of a crystallized glass powder capable of depositing a diopside crystal, 1 to 40% by weight of a calcium titanate powder, a strontium titanate powder or a mixed powder thereof, and 0 to 60% by weight of at least one kind of a powder selected from the group consisting of Al2O3, TiO2, ZrO2, MgTiO3, BaTi4O9, La2Ti2O7, Nd2Ti2O7, Ca2Nb2O7, SrZrO3 and CaZrO3, and a dielectric ceramics obtained by firing the same.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: May 24, 2005
    Assignee: Kyocera Corporation
    Inventors: Tatsuji Furuse, Seiichiro Hirahara, Shuji Nakazawa, Yasushi Ode, Tomoyuki Kojima, Fumiaki Sekine, Hiroshi Makino, Manabu Yonekura
  • Publication number: 20040009863
    Abstract: The present invention provides a dielectric ceramic composition comprising: 30 to 90% by weight of a crystallized glass powder capable of depositing a diopside crystal, 1 to 40% by weight of a calcium titanate powder, a strontium titanate powder or a mixed powder thereof, and 0 to 60% by weight of at least one kind of a powder selected from the group consisting of Al2O3, TiO2, ZrO2, MgTiO3, BaTi4O9, La2Ti2O7, Nd2Ti2O7, Ca2Nb2O7, SrZrO3 and CaZrO3, and a dielectric ceramics obtained by firing the same.
    Type: Application
    Filed: January 23, 2003
    Publication date: January 15, 2004
    Applicant: KYOCERA CORPORATION
    Inventors: Tatsuji Furuse, Seiichiro Hirahara, Shuji Nakazawa, Yasushi Ode, Tomoyuki Kojima, Fumiaki Sekine, Hiroshi Makino, Manabu Yonekura
  • Patent number: 6417461
    Abstract: A circuit substrate in which the conductor portions constituting the functional devices formed in the insulating board have interfacial electric conductivities &sgr; of not larger than 2.90×107 &OHgr;−1·m−1 to greatly lower the insertion losses.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: July 9, 2002
    Assignee: Kyocera Corporation
    Inventors: Seiichi Hirahara, Akira Nakayama, Akira Imoto, Shuji Nakazawa, Tatsuji Furuse
  • Patent number: 4580702
    Abstract: A tubular container comprises a hollow body opened at one end and having in cross section a polygonal shape with sharp ridges being formed at corners, and a headpiece including a neck and a shoulder which includes an inclined portion having ridges and a polygonal configuration corresponding to the hollow body, the headpiece and the hollow body being integrally fused with each other with the ridges of the inclined portion being in agreement with the sharp ridges of the hollow body.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: April 8, 1986
    Assignee: Yoshida Industry Co., Ltd.
    Inventors: Yoshiharu Hatakeyama, Kenzo Teshima, Shuji Nakazawa