Patents by Inventor Kenji Tsutsui

Kenji Tsutsui 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: 10707200
    Abstract: An amplifier circuit including a semiconductor element is formed on a substrate. A protection circuit formed on the substrate includes a plurality of protection diodes that are connected in series with each other, and the protection circuit is connected to an output terminal of the amplifier circuit. A pad conductive layer at least partially includes a pad for connecting to a circuit outside the substrate. The pad conductive layer and the protection circuit at least partially overlap each other in plan view.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: July 7, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kenji Sasaki, Takayuki Tsutsui, Isao Obu, Yasuhisa Yamamoto
  • Publication number: 20200091874
    Abstract: In a radio frequency power amplifier, a semiconductor chip includes at least one first transistor amplifying a radio frequency signal, a first external-connection conductive member connected to the first transistor, a bias circuit including a second transistor that applies a bias voltage to the first transistor, and a second external-connection conductive member connected to the second transistor. The second external-connection conductive member at least partially overlaps with the second transistor when viewed in plan.
    Type: Application
    Filed: September 12, 2019
    Publication date: March 19, 2020
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Kenji SASAKI, Isao OBU, Takayuki TSUTSUI
  • Publication number: 20160121442
    Abstract: In a drive shaft press-fitting device, when a collet chuck (clamp) is moved backward by a linear motion means, the end part of the collet chuck closes by collaboration of a tapered surface of the collet chuck and an engagement part of a sleeve, and thereby the collet chuck holds an external thread part of the drive shaft. When the collet chuck is further moved backward by the linear motion means, the drive shaft is drawn out of the axle hub by the collet chuck, and thereby the drive shaft is pressed into the axle hub. After press-fitting, when the collet chuck is moved forward by the linear motion means, the collet chuck opens to be away from the external thread part of the drive shaft by a biasing means.
    Type: Application
    Filed: October 28, 2015
    Publication date: May 5, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kiyokazu URUNO, Kenji Tsutsui
  • Patent number: 8308442
    Abstract: There is provided an integrated electric compressor having a circuit configuration capable of decreasing the size thereof while restraining current ripples. In an inverter of the electric compressor, by providing a capacitor 13 and a reactor 14 between a power source and an inverter board 12, the ripples of a driving voltage is restrained, and a motor can be driven with high efficiency and the size of a housing can be decreased. Further, by connecting the capacitor 13 and the reactor 14 to a power board 16 by using a bus bar 23, the voltage ripple restraining effect is further increased, and the capacitor 13 and the reactor 14 are unitized integrally by the bus bar 23 to improve the assembling workability of the power board 16.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: November 13, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kenji Tsutsui, Makoto Hattori, Takayuki Takashige, Kazuki Niwa, Koji Nakano
  • Publication number: 20100014988
    Abstract: There is provided an integrated electric compressor having a circuit configuration capable of decreasing the size thereof while restraining current ripples. In an inverter of the electric compressor, by providing a capacitor 13 and a reactor 14 between a power source and an inverter board 12, the ripples of a driving voltage is restrained, and a motor can be driven with high efficiency and the size of a housing can be decreased. Further, by connecting the capacitor 13 and the reactor 14 to a power board 16 by using a bus bar 23, the voltage ripple restraining effect is further increased, and the capacitor 13 and the reactor 14 are unitized integrally by the bus bar 23 to improve the assembling workability of the power board 16.
    Type: Application
    Filed: September 28, 2007
    Publication date: January 21, 2010
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kenji Tsutsui, Makoto Hattori, Takayuki Takashige, Kazuki Niwa, Koji Nakano
  • Patent number: 7323125
    Abstract: A method for analyzing injection molding conditions, which takes into consideration the compressibility of molten resin in a barrel and mechanical delays in resin flow caused by constituent elements of an injection molding machine and analysis results thereof are provided. In a method for analyzing injection molding conditions in which, by using input data having shape data (31) and injection conditions data (37) to perform flow analysis of the process of filling the inside of the mold with molten resin, analysis of the pressure maintenance process from the filling with molten resin to the gate sealing, and analysis of the cooling process within the mold after gate sealing, the pressure and temperature distributions of resin within the mold are calculated, data (43) regarding compressibility of molten resin held in the barrel of the cylinder and mechanical data caused by constituent elements of the injection molding machine are added to the input data.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: January 29, 2008
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tetsuo Uwaji, Kimio Akazawa, Takashi Mizuno, Kenji Tsutsui, Kouji Kuwabara
  • Patent number: 6854967
    Abstract: The invention relates to an electric injecting molder and an injection velocity and injection pressure controlling method for an electric injecting molder, and it is an object of the present invention to make it possible, in injection molding by an electric injection molder, to mold stable resin products having a minimized dispersion in the quality even if the operation environment varies. When an injection screw (23) disposed in an injection cylinder (22) is driven to move in forward and backward directions by an electric motor (29A) to inject resin material (3) in the injection cylinder (22) into a metal mold (1, 2) to fill the metal mold (1, 2), the electric motor (29A) is first velocity-controlled to fill the resin material (3) into the metal mold (1, 2), and, after the filling, the electric motor (29A) is pressure-controlled to replenish the resin material for shrinkage of the resin.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: February 15, 2005
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kenji Tsutsui, Akihiro Maekawa, Tadashi Murata, Junji Murase
  • Publication number: 20040140579
    Abstract: A method for analyzing injection molding conditions, which takes into consideration the compressibility of molten resin in a barrel and mechanical delays in resin flow caused by constituent elements of an injection molding machine and analysis results thereof are provided. In a method for analyzing injection molding conditions in which, by using input data having shape data (31) and injection conditions data (37) to perform flow analysis of the process of filling the inside of the mold with molten resin, analysis of the pressure maintenance process from the filling with molten resin to the gate sealing, and analysis of the cooling process within the mold after gate sealing, the pressure and temperature distributions of resin within the mold are calculated, data (43) regarding compressibility of molten resin held in the barrel of the cylinder and mechanical data caused by constituent elements of the injection molding machine are added to the input data.
    Type: Application
    Filed: February 6, 2004
    Publication date: July 22, 2004
    Inventors: Tetsuo Uwaji, Kimio Akazawa, Takashi Mizuno, Kenji Tsutsui, Kouji Kuwabara
  • Publication number: 20020192322
    Abstract: The invention relates to an electric injecting molder and an injection velocity and injection pressure controlling method for an electric injecting molder, and it is an object of the present invention to make it possible, in injection molding by an electric injection molder, to mold stable resin products having a minimized dispersion in the quality even if the operation environment varies. When an injection screw (23) disposed in an injection cylinder (22) is driven to move in forward and backward directions by an electric motor (29A) to inject resin material (3) in the injection cylinder (22) into a metal mold (1, 2) to fill the metal mold (1, 2), the electric motor (29A) is first velocity-controlled to fill the resin material (3) into the metal mold (1, 2), and, after the filling, the electric motor (29A) is pressure-controlled to replenish the resin material for shrinkage of the resin.
    Type: Application
    Filed: June 26, 2002
    Publication date: December 19, 2002
    Inventors: Kenji Tsutsui, Akihiro Maekawa, Tadashi Murata, Junji Murase
  • Patent number: 6352928
    Abstract: A method of forming trench isolation comprising the steps of: burying a plurality of trenches formed in a substrate with a burying material and simultaneously forming a burying material layer on protrusive regions between adjacent trenches, by use of a process for concurrently executing vapor phase growth and etching; conducting an isotropic etching in such a manner as to leave the burying material layer on the protrusive region; and removing the remaining burying material layer by a CMP process for planarization.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: March 5, 2002
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Kenji Tsutsui
  • Publication number: 20010055870
    Abstract: A method of forming trench isolation comprising the steps of: burying a plurality of trenches formed in a substrate with a burying material and simultaneously forming a burying material layer on protrusive regions between adjacent trenches, by use of a process for concurrently executing vapor phase growth and etching; conducting an isotropic etching in such a manner as to leave the burying material layer on the protrusive region; and removing the remaining burying material layer by a CMP process for planarization.
    Type: Application
    Filed: March 30, 2000
    Publication date: December 27, 2001
    Inventor: Kenji Tsutsui
  • Patent number: 5250604
    Abstract: Polyamide composition having a high strength, high-rigidity and high impact characteristics with a smooth surface and improved in the decrease of physical properties by water absorption are made by compounding 100-250 parts by weight of glass fiber and 100 parts of weight of a mixture of 95-60 parts by weight of crystalline aliphatic polyamide, 0.2-10 parts by weight of crystalline copolyamide and 5-40 parts by weight of amorphous polyamide.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: October 5, 1993
    Assignee: Kishimoto Sangyo Company Ltd.
    Inventors: Takeshi Moriwaki, Kenji Tsutsui
  • Patent number: 4831074
    Abstract: The present invention is directed to a high specific gravity composite giving high-strength, rustproofing, and aesthetic products. The plastic composite is composed of 50-95 weight percent of glassy powder comprising 80 weight percent or more of lead monoxide (PbO) having particle size under 150 mesh, with balanced amount of resin and reinforcement.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: May 16, 1989
    Assignee: Kishimoto Sangyo Company Ltd.
    Inventors: Takeshi Moriwaki, Kenji Tsutsui