Patents by Inventor Kohei YAMAUCHI

Kohei YAMAUCHI 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: 20190371705
    Abstract: A semiconductor device includes: a first cooling device including a plurality of first flow channels through which a fluid flows, between a first main surface and a second main surface opposed to each other; a second cooling device including a plurality of second flow channels through which a fluid flows, between a third main surface and a fourth main surface parallel to the first main surface; a semiconductor element interposed between the first main surface and the third main surface facing each other; and a control terminal penetrating from the third main surface to the fourth main surface in a terminal-penetrating region defined at a predetermined position between the plurality of second flow channels, and electrically connected to a control electrode of the semiconductor element.
    Type: Application
    Filed: March 22, 2019
    Publication date: December 5, 2019
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Kohei YAMAUCHI, Hiromichi Gohara, Katsumi Taniguchi
  • Publication number: 20190354533
    Abstract: An information processing device according to the application concerned includes a generating unit and a providing unit. The generating unit generates a rating function for each node of a second-type graph which is generated from a first-type graph in which predetermined elements are treated as nodes and the relationships among the elements are treated as links, and which indicates a futuristic state of the first-type graph. The providing unit provides the information related to the second-type graph based on the rating function for the each node as generated by the generating unit.
    Type: Application
    Filed: February 25, 2019
    Publication date: November 21, 2019
    Applicant: YAHOO JAPAN CORPORATION
    Inventors: Tasuku MIYAZAKI, Hayato KOBAYASHI, Kohei SUGAWARA, Masaki NOGUCHI, Tomoya YAMAZAKI, Kazuki YAMAUCHI
  • Patent number: 10446460
    Abstract: The semiconductor device includes a first insulating circuit substrate; a semiconductor chip including a plurality of control electrodes, disposed on the first insulating circuit substrate; a second insulating circuit substrate including a plurality of first through-holes in which conductive members are arranged on inner walls and/or an outer periphery of ends of the first through-holes, the second insulating circuit substrate being disposed above the semiconductor chips; and first pins inserted into the first through-holes and having at one end a columnar part connected to the control electrodes of the semiconductor chips, and having at another end a head part that is wider than an inner diameter of the first through-holes.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: October 15, 2019
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Hiromichi Gohara, Kohei Yamauchi, Shinji Tada, Tatsuo Nishizawa, Yoshitaka Nishimura
  • Patent number: 10394147
    Abstract: Toner particles of a toner contain a non-crystalline polyester resin, a crystalline polyester resin, a styrene-acrylic acid-based resin, and an ester wax. The crystalline polyester resin has a repeating unit derived from an acrylic acid-based monomer and a repeating unit derived from a styrene-based monomer. The styrene-acrylic acid-based resin has a repeating unit derived from an acrylic acid-based monomer having an amino group and a repeating unit derived from a styrene-based monomer. An amino group ratio in the styrene-acrylic acid-based resin is at least 40% and no greater than 60%. The toner has a storage elastic modulus of at least 1.00×105 Pa and no greater than 5.00×105 Pa at 90° C. The ester wax has a melting point of at least 60° C. and no higher than 80° C. A dispersion diameter of the ester wax in the toner particles is at least 500 nm and no greater than 1,000 nm.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: August 27, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Kohei Yamauchi, Toshiki Takemori
  • Patent number: 10364218
    Abstract: A method of producing ?-caprolactam from 3-oxoadipic acid includes: step 1 of mixing at least one selected from the group consisting of 3-oxoadipic acid and salts thereof with a catalyst and a solvent in the presence of hydrogen to produce 3-hydroxyadipic acid; and step 2 of reacting the 3-hydroxyadipic acid which is a product of step 1, a salt or carboxylic acid derivative thereof, or a mixture of these with hydrogen and ammonia.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: July 30, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Daijiro Tsukamoto, Masateru Ito, Katsushige Yamada, Kohei Yamashita, Masato Akahira, Koji Yamauchi
  • Patent number: 10365571
    Abstract: An electrostatic latent image developing toner includes a plurality of toner particles containing a non-crystalline polyester resin and a crystalline polyester resin. The toner particles contain as the crystalline polyester resin a dispersoid of crystallized crystalline polyester resin (CPES) domains. The CPES domains of the CPES dispersoid have an aspect ratio of at least 3.40 and no greater than 10.0 in terms of number average value. The toner particles have a roundness of at least 0.950 and no greater than 0.970 in terms of number average value. In a cross-sectional image of each of the toner particles, a ratio of a total area occupied by the CPES dispersoid to a cross-sectional area of the toner particle is at least 10.0% and no greater than 30.0%. The non-crystalline polyester resin includes a repeating unit derived from alkenyl succinic anhydride. The crystalline polyester resin includes a repeating unit derived from n-butyl methacrylate.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: July 30, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Toshiki Takemori, Kohei Yamauchi
  • Patent number: 10332845
    Abstract: A semiconductor device includes: an upper-surface electrode on an upper surface of a semiconductor element; a plated layer on an upper surface of the upper-surface electrode; gate runners penetrating the plated layer and formed to extend above the upper surface of the semiconductor element; and a metal connecting plate arranged above the plated layer and electrically connected to the upper-surface electrode, wherein the metal connecting plate has a joint portion parallel to the upper surface of the semiconductor element and has a rising portion at an end of the joint portion, the rising portion extending in a direction away from the semiconductor element, and in a plane parallel to the upper surface of the semiconductor element, a first distance, which is a shortest distance between the rising portion and the gate runner not intersecting the rising portion, is equal to or longer than 1 mm.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: June 25, 2019
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Takafumi Yamada, Hiromichi Gohara, Ryoichi Kato, Kohei Yamauchi
  • Patent number: 10241431
    Abstract: Toner particles contain a non-crystalline polyester resin. The toner particles further contain 10 parts by mass to 30 parts by mass of a crystalline polyester resin, 30 parts by mass to 50 parts by mass of a styrene-acrylic acid-based resin, and 8 parts by mass to 15 parts by mass of an ester wax relative to 100 parts by mass of the non-crystalline polyester resin. The crystalline polyester resin includes a repeating unit derived from an acrylic acid-based monomer and a repeating unit derived from a styrene-based monomer. The styrene-acrylic acid-based resin includes a repeating unit derived from an acrylic acid-based monomer having an amino group and has an amino group ratio of 40% to 60%. The ester wax in the toner particles has a dispersion diameter of 500 nm to 1,000 nm.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: March 26, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Kohei Yamauchi, Hiroki Uemura
  • Publication number: 20190088575
    Abstract: A semiconductor module includes a semiconductor element having one and the other surface, a lead terminal connected electrically and thermally to the semiconductor element, a first solder which bonds the lead terminal and the one surface of the semiconductor element together, a circuit layer over which the semiconductor element is disposed and a second solder which bonds the other surface of the semiconductor element and the circuit layer together. The inequality (A/B)<1 holds, where A and B are the tensile strength of the first and second solder, respectively. As a result, even if the lead terminal which thermally expands because of heat generated by the semiconductor element expands or contracts toward the semiconductor element, a stress applied by the lead terminal is absorbed and relaxed by the first solder. This prevents damage to the surface electrode of the semiconductor element by suppressing the occurrence of cracks.
    Type: Application
    Filed: September 4, 2018
    Publication date: March 21, 2019
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Ryoichi Kato, Kohei Yamauchi, Hiromichi Gohara, Tatsuhiko Asai
  • Publication number: 20180348655
    Abstract: Toner particles of a toner contain a non-crystalline polyester resin, a crystalline polyester resin, a styrene-acrylic acid-based resin, and an ester wax. The crystalline polyester resin has a repeating unit derived from an acrylic acid-based monomer and a repeating unit derived from a styrene-based monomer. The styrene-acrylic acid-based resin has a repeating unit derived from an acrylic acid-based monomer having an amino group and a repeating unit derived from a styrene-based monomer. An amino group ratio in the styrene-acrylic acid-based resin is at least 40% and no greater than 60%. The toner has a storage elastic modulus of at least 1.00×105 Pa and no greater than 5.00×105 Pa at 90° C. The ester wax has a melting point of at least 60° C. and no higher than 80° C. A dispersion diameter of the ester wax in the toner particles is at least 500 nm and no greater than 1,000 nm.
    Type: Application
    Filed: May 25, 2018
    Publication date: December 6, 2018
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Kohei YAMAUCHI, Toshiki TAKEMORI
  • Patent number: 10128345
    Abstract: A semiconductor device including a semiconductor element, an upper-surface electrode provided on an upper surface of the semiconductor element, a plated layer provided on an upper surface of the upper-surface electrode, one or more gate runners penetrating the plated layer and provided to extend in a predetermined direction on the upper surface of the semiconductor element, and a metal connecting plate that is arranged above the plated layer and is electrically connected to the upper-surface electrode, wherein the metal connecting plate has a joint portion parallel to the upper surface of the semiconductor element and has a rising portion that is connected to a first end of the joint portion and extends in a direction away from the upper surface of the semiconductor element, and in a plane parallel to the upper surface of the semiconductor element, the rising portion and the gate runner do not overlap with each other.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: November 13, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Ryoichi Kato, Hiromichi Gohara, Takafumi Yamada, Kohei Yamauchi, Tatsuhiko Asai, Yoshitaka Nishimura, Akio Kitamura, Hajime Masubuchi, Souichi Yoshida
  • Publication number: 20180315676
    Abstract: The semiconductor device includes a first insulating circuit substrate; a semiconductor chip including a plurality of control electrodes, disposed on the first insulating circuit substrate; a second insulating circuit substrate including a plurality of first through-holes in which conductive members are arranged on inner walls and/or an outer periphery of ends of the first through-holes, the second insulating circuit substrate being disposed above the semiconductor chips; and first pins inserted into the first through-holes and having at one end a columnar part connected to the control electrodes of the semiconductor chips, and having at another end a head part that is wider than an inner diameter of the first through-holes.
    Type: Application
    Filed: March 7, 2018
    Publication date: November 1, 2018
    Applicant: Fuji Electric Co., Ltd.
    Inventors: Hiromichi GOHARA, Kohei YAMAUCHI, Shinji TADA, Tatsuo NISHIZAWA, Yoshitaka NISHIMURA
  • Publication number: 20180301422
    Abstract: A semiconductor device encompasses a cooler made of ceramics, having a first main face and a second main face, being parallel and opposite to the first main face, defined by two opposite side faces perpendicular to the first and second main faces, a plurality of conductive-pattern layers delineated on the first main face, a semiconductor chip mounted on the first main face via one of the plurality of conductive-pattern layers, and a seal member configured to seal the semiconductor chip.
    Type: Application
    Filed: February 23, 2018
    Publication date: October 18, 2018
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Kohei YAMAUCHI, Hiromichi GOHARA, Ryoichi KATO, Yoshinari IKEDA, Katsumi TANIGUCHI
  • Publication number: 20180259866
    Abstract: An electrostatic latent image developing toner includes a plurality of toner particles containing a non-crystalline polyester resin and a crystalline polyester resin. The toner particles contain as the crystalline polyester resin a CPES dispersoid that is a dispersoid of crystallized crystalline polyester resin domains. The crystallized crystalline polyester resin domains are a plurality of CPES domains present in a dispersed state in the toner particles. The CPES domains of the CPES dispersoid have an aspect ratio of at least 3.40 and no greater 10.0 in terms of number average value. The toner particles have a roundness of at least 0.950 and no greater than 0.970 in terms of number average value. In a cross-sectional image of each of the toner particles, a ratio of a total area occupied by the CPES dispersoid to a cross-sectional area of the toner particle is at least 10.0% and no greater than 30.0%.
    Type: Application
    Filed: February 26, 2018
    Publication date: September 13, 2018
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Toshiki TAKEMORI, Kohei YAMAUCHI
  • Patent number: 10001717
    Abstract: An electrostatic latent image developing toner includes a plurality of toner particles each including a composite core and a shell layer covering a surface of the composite core. The composite core is a composite of a toner core and a plurality of organic particles each adhering to a surface of the toner core. The shell layer contains a first resin having a glass transition point of at least 50° C. and no greater than 90° C. The organic particles each contain a releasing agent and a second resin having a glass transition point of at least 90° C. and no greater than 110° C.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: June 19, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Hiroki Uemura, Kohei Yamauchi
  • Publication number: 20180166549
    Abstract: A semiconductor device including a semiconductor element, an upper-surface electrode provided on an upper surface of the semiconductor element, a plated layer provided on an upper surface of the upper-surface electrode, one or more gate runners penetrating the plated layer and provided to extend in a predetermined direction on the upper surface of the semiconductor element, and a metal connecting plate that is arranged above the plated layer and is electrically connected to the upper-surface electrode, wherein the metal connecting plate has a joint portion parallel to the upper surface of the semiconductor element and has a rising portion that is connected to a first end of the joint portion and extends in a direction away from the upper surface of the semiconductor element, and in a plane parallel to the upper surface of the semiconductor element, the rising portion and the gate runner do not overlap with each other.
    Type: Application
    Filed: October 25, 2017
    Publication date: June 14, 2018
    Inventors: Ryoichi KATO, Hiromichi GOHARA, Takafumi YAMADA, Kohei YAMAUCHI, Tatsuhiko ASAI, Yoshitaka NISHIMURA, Akio KITAMURA, Hajime MASUBUCHI, Souichi YOSHIDA
  • Publication number: 20180166397
    Abstract: A semiconductor device includes: an upper-surface electrode on an upper surface of a semiconductor element; a plated layer on an upper surface of the upper-surface electrode; gate runners penetrating the plated layer and formed to extend above the upper surface of the semiconductor element; and a metal connecting plate arranged above the plated layer and electrically connected to the upper-surface electrode, wherein the metal connecting plate has a joint portion parallel to the upper surface of the semiconductor element and has a rising portion at an end of the joint portion, the rising portion extending in a direction away from the semiconductor element, and in a plane parallel to the upper surface of the semiconductor element, a first distance, which is a shortest distance between the rising portion and the gate runner not intersecting the rising portion, is equal to or longer than 1 mm.
    Type: Application
    Filed: November 29, 2017
    Publication date: June 14, 2018
    Inventors: Takafumi YAMADA, Hiromichi GOHARA, Ryoichi KATO, Kohei YAMAUCHI
  • Publication number: 20180149991
    Abstract: Toner particles contain a non-crystalline polyester resin. The toner particles further contain 10 parts by mass to 30 parts by mass of a crystalline polyester resin, 30 parts by mass to 50 parts by mass of a styrene-acrylic acid-based resin, and 8 parts by mass to 15 parts by mass of an ester wax relative to 100 parts by mass of the non-crystalline polyester resin. The crystalline polyester resin includes a repeating unit derived from an acrylic acid-based monomer and a repeating unit derived from a styrene-based monomer. The styrene-acrylic acid-based resin includes a repeating unit derived from an acrylic acid-based monomer having an amino group and has an amino group ratio of 40% to 60%. The ester wax in the toner particles has a dispersion diameter of 500 nm to 1,000 nm.
    Type: Application
    Filed: November 8, 2017
    Publication date: May 31, 2018
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Kohei YAMAUCHI, Hiroki UEMURA
  • Publication number: 20170343913
    Abstract: An electrostatic latent image developing toner includes a plurality of toner particles each including a composite core and a shell layer covering a surface of the composite core. The composite core is a composite of a toner core and a plurality of organic particles each adhering to a surface of the toner core. The shell layer contains a first resin having a glass transition point of at least 50° C. and no greater than 90° C. The organic particles each contain a releasing agent and a second resin having a glass transition point of at least 90° C. and no greater than 110° C.
    Type: Application
    Filed: May 25, 2017
    Publication date: November 30, 2017
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Hiroki UEMURA, Kohei YAMAUCHI