Patents by Inventor Tatsuya Fujita

Tatsuya Fujita 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: 20240136342
    Abstract: A composite electronic component includes circuit layers, each including an electronic component, that are laminated, first and second circuit layers, a ceramic electronic component between the first and second circuit layers and including via electrodes extending through a body mainly including ceramic and being exposed at a corresponding one of a main surface on one side and a main surface on another side, and a sealing resin covering at least the ceramic electronic component at a location between the first and second circuit layers. At least one electronic component included in each of the first and second circuit layers are electrically connected by the via electrodes.
    Type: Application
    Filed: January 5, 2024
    Publication date: April 25, 2024
    Inventors: Yukihiro FUJITA, Ryutaro YAMATO, Tatsuya FUNAKI, Yoshiaki SATAKE
  • Publication number: 20240110186
    Abstract: A method produces a hairpin single-stranded RNA molecule capable of inhibiting expression of a target gene, including the step of reacting a first single-stranded oligo-RNA molecule represented by formula (I) with a second single-stranded oligo-RNA molecule represented by formula (II) in a mixed solvent including a buffer solution and a hydrophilic organic solvent in the presence of a dehydration condensation agent: 5?-Xc-Lx1 . . . (I) and Lx2-X—Y-Ly-Yc-3? . . . (II), wherein the dehydration condensation agent is selected from the group consisting of a triazine-based dehydration condensation agent, a uronium-based dehydration condensation agent including an N-hydroxy nitrogen-containing aromatic ring structure, a carbodiimide-based dehydration condensation agent, a 2-halopyridinium-based dehydration condensation agent, and a formamidinium-based dehydration condensation agent.
    Type: Application
    Filed: September 1, 2023
    Publication date: April 4, 2024
    Inventors: Kyohei Koshimoto, Katsuhiko Iseki, Hideaki Inada, Tatsuya Fujita, Keiichi Okimura, Munetaka Kunishima, Tadaaki Ohgi, Eriko Aoki
  • Publication number: 20240106958
    Abstract: A group management device includes a required information acquisition unit, a supplement instruction unit, a mounting information acquisition unit, and a group update unit. The required information acquisition unit acquires information showing required groups that are groups determined to require supplements of the consumables used in image forming devices that are managed per group. The supplement instruction unit performs a supplement instruction of the consumables for the required groups. The mounting information acquisition unit acquires mounting information showing the image forming device mounted with the consumable supplemented in response to the supplement instruction.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 28, 2024
    Inventors: Tatsuya Inagi, Shigeki Yamaguchi, Satoshi Oyama, Takumi Fujita
  • Patent number: 11891602
    Abstract: A method produces a hairpin single-stranded RNA molecule capable of inhibiting expression of a target gene, including the step of reacting a first single-stranded oligo-RNA molecule represented by formula (I) with a second single-stranded oligo-RNA molecule represented by formula (II) in a mixed solvent including a buffer solution and a hydrophilic organic solvent in the presence of a dehydration condensation agent: 5?-Xc-Lx1 (I) and Lx2-X—Y-Ly-Yc-3? (II), wherein the dehydration condensation agent is selected from the group consisting of a triazine-based dehydration condensation agent, a uronium-based dehydration condensation agent including an N-hydroxy nitrogen-containing aromatic ring structure, a carbodiimide-based dehydration condensation agent, a 2-halopyridinium-based dehydration condensation agent, and a formamidinium-based dehydration condensation agent.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: February 6, 2024
    Assignee: Toray Industries, Inc.
    Inventors: Kyohei Koshimoto, Katsuhiko Iseki, Hideaki Inada, Tatsuya Fujita, Keiichi Okimura, Munetaka Kunishima, Tadaaki Ohgi, Eriko Aoki
  • Publication number: 20230283149
    Abstract: A stator for a rotating electrical machine includes a stator core, a stator winding disposed on or in the stator core, and an annular resinous seal which covers an axial end portion of a coil end of the stator winding. The resinous seal has an inner circumferential surface which is shaped to have a first inner diameter close to the stator core and a second inner diameter farther away from the stator core. The first inner diameter is selected to be smaller than the second inner diameter. This ensures the stability of electrical insulation of the stator winding.
    Type: Application
    Filed: February 23, 2023
    Publication date: September 7, 2023
    Applicants: DENSO CORPORATION, AISIN CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiji KONDO, Tatsuya FUJITA, Junichi SUGAWARA, Yoshihiro TAKAHARA
  • Publication number: 20210317495
    Abstract: A method produces a hairpin single-stranded RNA molecule capable of inhibiting expression of a target gene, including the step of reacting a first single-stranded oligo-RNA molecule represented by formula (I) with a second single-stranded oligo-RNA molecule represented by formula (II) in a mixed solvent including a buffer solution and a hydrophilic organic solvent in the presence of a dehydration condensation agent: 5?-Xc-Lx1 (I) and Lx2-X—Y-Ly-Yc-3? (II), wherein the dehydration condensation agent is selected from the group consisting of a triazine-based dehydration condensation agent, a uronium-based dehydration condensation agent including an N-hydroxy nitrogen-containing aromatic ring structure, a carbodiimide-based dehydration condensation agent, a 2-halopyridinium-based dehydration condensation agent, and a formamidinium-based dehydration condensation agent.
    Type: Application
    Filed: October 2, 2019
    Publication date: October 14, 2021
    Inventors: Kyohei Koshimoto, Katsuhiko Iseki, Hideaki Inada, Tatsuya Fujita, Keiichi Okimura, Munetaka Kunishima, Tadaaki Ohgi, Eriko Aoki
  • Patent number: 10895238
    Abstract: A starter for an internal combustion engine includes a rotating shaft formed with a helical spline on an outer periphery thereof and which rotates by a rotation of a motor, a pinion gear helically splined to the rotating shaft and movable in an axial direction of the rotating shaft along a tooth surface of the helical spline, a lever receiving member disposed opposing an end surface in an axial direction of the pinion gear, moved by receiving an axial pushing force by a pushing member, and causing the pinion gear to engage with a ring gear of the internal combustion engine by a movement thereof, and a buffer member for restricting a movement of the pinion gear in a rotational direction when the pinion gear moves along the teeth surface of the helical spline.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: January 19, 2021
    Assignee: DENSO CORPORATION
    Inventors: Tatsuya Fujita, Takashi Hirabayashi, Tasuku Yamada, Mitsuhiro Murata
  • Patent number: 10895239
    Abstract: To suppress generation of noise during cranking, a pinion gear is fixed to a drive shaft of a starter starting an internal combustion engine. The pinion gear rotates a ring gear provided to the internal combustion engine by meshing therewith. The pinion gear includes gear teeth and an annular hollow portion located radially inside of the gear teeth. The annular hollow portion accommodates a vibration absorber to absorb vibration generated in the gear tooth.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: January 19, 2021
    Assignee: DENSO CORPORATION
    Inventor: Tatsuya Fujita
  • Publication number: 20200362806
    Abstract: A motor used for a starter of an internal combustion engine includes a motor shaft; a slide bearing that rotatably supports the motor shaft; and a bearing support member that supports the slide bearing. The motor shaft includes a concave portion or a convex portion extending in a direction orthogonal to an axial direction, the concave portion and the convex portion each includes a first surface and a second surface which face each other and the slide bearing is configured to be divided into a plurality of sections in a circumferential direction or the axial direction of the motor, the slide bearing serves as a regulation member that regulates a deviation of the motor shaft in the axial direction by an engagement between the slide bearing with the concave portion or the convex portion.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 19, 2020
    Applicant: DENSO CORPORATION
    Inventors: Hiroyuki KUBO, Tatsuya FUJITA
  • Publication number: 20200340440
    Abstract: A brushed DC includes a housing, a motor shaft, a cap, a restricting member and a spacer. The housing has a cylindrical portion with an axial end surface. The motor shaft has a protruding portion protruding from the cylindrical portion of the housing and an annular groove formed in an outer circumferential surface of the protruding portion. The cap is mounted to the cylindrical portion of the housing with an opposing surface of the cap opposed to the axial end surface of the cylindrical portion. The restricting member is mounted in the groove of the motor shaft and fixed between the axial end surface and the opposing surface to restrict axial movement of the motor shaft. The spacer is interposed, in a state of having been plastically deformed in an axial direction of the motor shaft during the mounting of the cap, between the opposing surface and the restricting member.
    Type: Application
    Filed: April 24, 2020
    Publication date: October 29, 2020
    Applicant: DENSO CORPORATION
    Inventor: Tatsuya FUJITA
  • Publication number: 20200224629
    Abstract: To suppress generation of noise during cranking, a pinion gear is fixed to a drive shaft of a starter starting an internal combustion engine. The pinion gear rotates a ring gear provided to the internal combustion engine by meshing therewith. The pinion gear includes gear teeth and an annular hollow portion located radially inside of the gear teeth. The annular hollow portion accommodates a vibration absorber to absorb vibration generated in the gear tooth.
    Type: Application
    Filed: December 10, 2019
    Publication date: July 16, 2020
    Applicant: DENSO CORPORATION
    Inventor: Tatsuya FUJITA
  • Patent number: 10676611
    Abstract: The purpose of the present invention is to provide a prepreg which satisfies one of a)-c): a) having superior storage stability and capable of providing a fiber-reinforced composite material having superior mechanical properties; b) capable of providing a fiber-reinforced composite material having superior mechanical properties, and the obtained fiber-reinforced composite material has superior appearance quality; and c) having superior storage stability, generating less amount of heat when cured, and enabling the cure extent and the viscosity in the B-stage state to be flexibly controlled. To achieve the purpose, the present invention provides a prepreg including reinforced fibers and an epoxy resin composition which contains an epoxy resin and a curing agent represented by a specific chemical formula, and which satisfies a specific condition.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: June 9, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Eiki Takahashi, Daisuke Konishi, Noriyuki Hirano, Tatsuya Fujita, Shuji Udagawa
  • Patent number: 10584672
    Abstract: An engine starting system is provided which is used with a vehicle equipped with a gear driving starter which is energized to bring a pinion gear into engagement with a ring gear of an engine mounted in the vehicle and also to rotate the pinion gear to crank the engine. The engine starting system works to terminate energization of the starter after the starter is energized to start the engine. The engine starting system executes combustion control to control combustion of fuel in the engine so as to develop a first firing event where the fuel is first fired in the engine after the energization of the starter is terminated. This minimizes the gear noise when the engine is being cranked and ensures the stability in starting the engine.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: March 10, 2020
    Assignee: DENSO CORPORATION
    Inventors: Tatsuya Fujita, Mitsuhiro Murata
  • Patent number: 10415531
    Abstract: A starter for an engine is equipped with a planetary gear train as a torque variator to change torque used to start the engine. The torque variator is capable of changing the degree of torque which is transmitted between a planetary carrier and an outer gear of the planetary gear train, thereby changing a ratio of speed of a sun gear to speed of the planetary carrier of the planetary gear train to increase or decrease the degree of torque required to start the engine. This ensures the stability in starting the engine, for example, in cold conditions and achieves a quick start of the engine as needed.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: September 17, 2019
    Assignee: DENSO CORPORATION
    Inventor: Tatsuya Fujita
  • Publication number: 20190249002
    Abstract: The purpose of the present invention is to provide a prepreg which satisfies one of a)-c): a) having superior storage stability and capable of providing a fiber-reinforced composite material having superior mechanical properties; b) capable of providing a fiber-reinforced composite material having superior mechanical properties, and the obtained fiber-reinforced composite material has superior appearance quality; and c) having superior storage stability, generating less amount of heat when cured, and enabling the cure extent and the viscosity in the B-stage state to be flexibly controlled. To achieve the purpose, the present invention provides a prepreg including reinforced fibers and an epoxy resin composition which contains an epoxy resin and a curing agent represented by a specific chemical formula, and which satisfies a specific condition.
    Type: Application
    Filed: July 20, 2017
    Publication date: August 15, 2019
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Eiki Takahashi, Daisuke Konishi, Noriyuki Hirano, Tatsuya Fujita, Shuji Udagawa
  • Patent number: 10371078
    Abstract: A starter controller incorporated in a starter control system for controlling actuation of a first starter and a second starter to start an engine. The second starter is an alternating-current (AC) starter. The starter control system actuates the first starter in response to an engine start-up request, deactivates the first starter before completion of engine start-up, and activates the second starter while the second starter is being rotated by rotation of an engine rotary shaft. In the starter controller, a determination unit is configured to, under a condition where the engine rotary shaft is rotating after deactivation of the first starter, determine whether or not recognition of rotation of the second starter is complete. A fail-safe unit is configured to, if the recognition of rotation of the second starter is complete, perform predefined fail-safe processing responding to an abnormality in the second starter.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: August 6, 2019
    Assignee: DENSO CORPORATION
    Inventor: Tatsuya Fujita
  • Patent number: 10337482
    Abstract: A starter includes a coil spring disposed between a pinion gear and a motor and a buffer rubber disposed between the pinion gear and the coil spring. When the pinion gear is subjected to a reactive force from an engine, the buffer rubber absorbs the impact. Before the impact acts on the pinion gear, the coil spring is subjected to a given initial load. When the impact acts on the pinion gear, the coil spring absorbs it transmitted through the buffer rubber. The cover in which the coil spring is stored has a flange which is held from moving to the pinion gear in response to expansion of the coil spring, while it is permitted to move to the motor in response to contraction of the coil spring. This eliminates a risk that mechanical noise occurs when the pinion gear is advanced and then brought into mesh with the engine.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: July 2, 2019
    Assignee: DENSO CORPORATION
    Inventors: Tatsuya Fujita, Takashi Hirabayashi, Tasuku Yamada
  • Patent number: 10316810
    Abstract: A vehicle control system is provided which is used in a vehicle equipped with an engine as a drive power source and works to establish engagement of a pinion of a starter motor with a ring gear mounted on a rotational axis of the engine and then actuate the starter motor to start the engine. The vehicle control system executes a preset mode to move the pinion to achieve the engagement with the ring gear when the rotation speed of the engine has dropped below a given threshold value. The threshold value is determined as a function of speed of the vehicle, thereby alleviating a driver's perception about unwanted mechanical noise arising from impact the pinion on the ring gear upon the engagement therebetween.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: June 11, 2019
    Assignee: DENSO CORPORATION
    Inventor: Tatsuya Fujita
  • Patent number: 10167838
    Abstract: An engine control apparatus is used with a system equipped with an engine and an engine starter. The engine starter includes an electrical motor, a pinion gear driven by the electrical motor, and a pinion shifter which thrusts the pinion to a location where the pinion is engageable with a ring gear coupled to the engine. The engine control apparatus determines a pulsation parameter which represents a pulsating component of speed of the engine or a value correlating with the pulsating component. The engine control apparatus works to thrust the pinion through the pinion shifter to establish engagement with the ring gear and then rotate the electrical motor to crank the engine. The engine control apparatus alters a cranking terminating time as a function of the pulsation parameter. This minimizes mechanical noise occurring between the pinion gear and the ring gear at the start of the engine.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: January 1, 2019
    Assignee: DENSO CORPORATION
    Inventor: Tatsuya Fujita
  • Patent number: 10132283
    Abstract: An engine starting apparatus including a starter including a motor configured to generate a rotational force, and a pinion configured to transfer the rotational force of the motor to a ring gear. The starter is configured to crank an engine at a specific revolution-speed increase rate to increase a revolution speed of the engine to a predetermined revolution speed equal to or greater than 450 rpm. The apparatus further includes an ignition-timing setter configured to set an ignition timing at which fuel in a combustion chamber of the engine is ignited while the revolution speed of the engine is increased during cranking of the engine by the starter or during coasting of the engine after termination of cranking of the engine by the starter, and an engine-speed predictor configured to predict a revolution speed of the engine at the ignition timing based on the specific revolution-speed increase rate.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: November 20, 2018
    Assignee: DENSO CORPORATION
    Inventors: Tatsuya Fujita, Mitsuhiro Murata