Patents by Inventor Hiroyuki Yamashita

Hiroyuki Yamashita 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: 20220065190
    Abstract: An engine is provided, which includes a combustion chamber defined by a cylinder head and a piston inside a cylinder of a cylinder block, a fuel injection nozzle provided to the cylinder head and formed in a tip-end part with an injection hole from which fuel is injected into the combustion chamber, the tip-end part being exposed to the combustion chamber, and a passage-forming member formed with a passage through which the fuel injected from the injection hole passes. An outer circumferential surface of the passage-forming member contacts a combustion-chamber ceiling surface of the cylinder head, and the passage of the passage-forming member includes an enlarged part gradually increasing in a cross-sectional area thereof from an upstream side to a downstream side of the passage.
    Type: Application
    Filed: July 28, 2021
    Publication date: March 3, 2022
    Inventors: Akira Kuramochi, Yuji Harada, Takeshi Nagasawa, Masatoshi Seto, Junki Hori, Yudai Koshiro, Yoshiyuki Koga, Hiroyuki Yamashita
  • Publication number: 20220065158
    Abstract: An engine is provided, which includes a combustion chamber defined by a cylinder head and a piston inside a cylinder of a cylinder block, a fuel injection nozzle provided to the cylinder head and formed in a tip-end part with a plurality of injection holes from which fuel is injected into the combustion chamber, the tip-end part being exposed to the combustion chamber, and a passage-forming member formed with a passage through which the injected fuel passes. The injection holes include first and second injection holes, and the passage-forming member is disposed around the tip-end part of the nozzle so as to cause a difference between a speed at which fuel injected from the first injection hole flows toward a circumferential part of the combustion chamber, and a speed at which fuel injected from the second injection hole flows toward the circumferential part.
    Type: Application
    Filed: July 29, 2021
    Publication date: March 3, 2022
    Inventors: Akira Kuramochi, Yuji Harada, Takeshi Nagasawa, Masatoshi Seto, Junki Hori, Yudai Koshiro, Yoshiyuki Koga, Hiroyuki Yamashita
  • Patent number: 11259605
    Abstract: In this molded surface fastener, plural engaging elements having a stem portion and an engaging head portion formed integrally on the stem portion are standing on the base portion, at least one pawl portion having a pawl width dimension narrower than a width dimension at a boundary between the stem portion and the engaging head portion is protruded on an outer peripheral edge part of the engaging head portion, and a back surface of pawl of the pawl portion is formed at different angles with respect to a back surface of head portion of the engaging head portion. Such a molded surface fastener of the present invention has a substantial engaging force with respect to a female surface fastener and can make a texture of its surface comfortable.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: March 1, 2022
    Assignee: YKK Corporation
    Inventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Isamu Michihata, Yui Hashimoto
  • Publication number: 20220039521
    Abstract: A method for manufacturing a molded surface fastener may include using, as a synthetic resin forming the molded surface fastener, a thermoplastic resin having a melt flow rate of 20 g/10 min or more and 60 g/10 min or less and a flexural modulus of 1000 MPa or more and 2300 MPa or less. Consequently, an engaging element in which a top end surface of an engaging head portion is flat, and at least a part of a back-side proximal end surface of the engaging head portion has an angle of 70° or more and 110° or less with respect to a height direction of the stem portion can be stably molded, and thus the molded surface fastener that has a high peel strength and a good texture can be obtained.
    Type: Application
    Filed: November 16, 2018
    Publication date: February 10, 2022
    Inventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Kyoichi Yuki, Ryosuke Tanimoto
  • Patent number: 11208968
    Abstract: An engine system includes an engine, a main combustion chamber formed by a cylinder head and a piston, an auxiliary chamber formed with a communicating hole communicating with the main combustion chamber, an injector configured to inject fuel into the main combustion chamber, an ignition plug provided to the auxiliary chamber and configured to ignite a mixture gas inside the auxiliary chamber, an accelerator opening sensor, and a control device. The control device controls the injector so that an air-fuel ratio of the mixture gas inside the auxiliary chamber becomes a first air-fuel ratio when an engine load range is a first range, and the air-fuel ratio of the mixture gas inside the auxiliary chamber becomes a second air-fuel ratio leaner than the first air-fuel ratio when the engine load range is a second range where the engine load is higher than in the first range.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: December 28, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kazuhiro Nagatsu, Hirotaka Suzuki, Yuji Harada, Hiroyuki Yamashita, Ryohei Ono, Kenji Uchida
  • Publication number: 20210267320
    Abstract: In a molded surface fastener in which an engaging element includes at least two engaging pawl portions protruded outward, a plurality of the engaging elements is disposed in a line along a machine direction to form an element row, a plurality of the element rows is arranged side by side in a cross direction, each of the engaging elements has, as the engaging pawl portions, at least a pair of symmetrical engaging pawl portions which are disposed each other at symmetrical positions in the cross direction and are respectively protruded in the cross direction sides, and a plurality of the engaging elements is arranged in a staggered pattern. Thereby, the molded surface fastener can appropriately and stably exert desired performance such as peel strength with respect to more types of non-woven fabrics.
    Type: Application
    Filed: July 9, 2018
    Publication date: September 2, 2021
    Applicant: YKK Corporation
    Inventors: Hiroyuki Yamashita, Yoshiyuki Fukuhara, Ryosuke Tanimoto, Makoto Takekawa, Shoichi Yokoyama
  • Patent number: 11089845
    Abstract: In this molded surface fastener, plural engaging elements having a stem portion and an engaging head portion formed integrally on the stem portion are standing on the base portion, at least one pawl portion having a pawl width dimension narrower than a width dimension at a boundary between the stem portion and the engaging head portion is protruded on an outer peripheral edge part of the engaging head portion, and a back surface of pawl of the pawl portion is formed at different angles with respect to a back surface of head portion of the engaging head portion. Such a molded surface fastener of the present invention has a substantial engaging force with respect to a female surface fastener and can make a texture of its surface comfortable.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: August 17, 2021
    Assignee: YKK Corporation
    Inventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Isamu Michihata, Yui Hashimoto
  • Publication number: 20210222643
    Abstract: An engine system includes an engine, a main combustion chamber formed by a cylinder head and a piston, an auxiliary chamber formed with a communicating hole communicating with the main combustion chamber, an injector configured to inject fuel into the main combustion chamber, an ignition plug provided to the auxiliary chamber and configured to ignite a mixture gas inside the auxiliary chamber, an accelerator opening sensor, and a control device. The control device controls the injector so that an air-fuel ratio of the mixture gas inside the auxiliary chamber becomes a first air-fuel ratio when an engine load range is a first range, and the air-fuel ratio of the mixture gas inside the auxiliary chamber becomes a second air-fuel ratio leaner than the first air-fuel ratio when the engine load range is a second range where the engine load is higher than in the first range.
    Type: Application
    Filed: December 22, 2020
    Publication date: July 22, 2021
    Inventors: Kazuhiro Nagatsu, Hirotaka Suzuki, Yuji Harada, Hiroyuki Yamashita, Ryohei Ono, Kenji Uchida
  • Publication number: 20210153886
    Abstract: Forceps 2 include an insertion tube 6 having a tubular shape, and an operation wire 8 inserted in the insertion tube 6 so as to be movable forward and backward. The operation wire 8 includes a wire body 18, and a plurality of grasping members 20 extending from a leading end of the wire body 18. The grasping members 20 include grasping bodies 26. In an inserted attitude in which the grasping members 20 are inserted in the insertion tube 6, the grasping bodies 26 are arranged in a circumferential direction and a space 24 is formed so as to be surrounded by the grasping bodies 26 arranged in the circumferential direction.
    Type: Application
    Filed: May 15, 2018
    Publication date: May 27, 2021
    Applicant: TOKUSEN KOGYO CO., LTD.
    Inventor: Hiroyuki YAMASHITA
  • Publication number: 20210145133
    Abstract: Provided is a molding apparatus used for manufacturing a molded surface fastener wherein a die wheel driving rotationally has a concentric double cylinder structure provided with an outer side cylindrical body that has provided therethrough a plurality of penetrating holes, and an inner side cylindrical body that has formed, in the outer peripheral surface thereof, a plurality of grooved portions, the grooved portions located in the inner side cylindrical body include a use grooved portion that intersects with the penetrating hole of the outer side cylindrical body and a non-use grooved portion that is covered by the inner peripheral surface of the outer side cylindrical body. By using this molding apparatus obtained is a molded surface fastener in which a plurality of types of engaging elements having different shapes in a plan view are arranged cyclically in a reference direction.
    Type: Application
    Filed: January 27, 2021
    Publication date: May 20, 2021
    Inventors: Makoto Takekawa, Yoshiyuki Fukuhara, Hiroyuki Yamashita, Isamu Michihata, Yui Hashimoto
  • Publication number: 20210131861
    Abstract: A blade vibration monitoring device includes: a rotary machine including a rotating shaft that extends along an axis, and a plurality of moving blades having moving blade bodies that extend radially outward in a radial direction from the rotating shaft, and shrouds that are provided at tips of the moving blade bodies and are in contact with each other in a circumferential direction; and a sensor that is provided on the outside of the shroud in the radial direction to face the shroud, and is configured to detect a change in an outer circumferential surface of the shroud, in which the outer circumferential surface of the shroud includes a first surface, and a second surface which is disposed to be interposed between the first surfaces from both sides in the circumferential direction, and in which a detection signal from the sensor is different from that of the first surface.
    Type: Application
    Filed: May 30, 2018
    Publication date: May 6, 2021
    Inventors: Hiroyuki YAMASHITA, Kazuhiro TAMURA, Keiichiro MIYAJIMA
  • Publication number: 20210118906
    Abstract: In one embodiment, a semiconductor device includes a substrate, insulating films and first films alternately stacked on the substrate, at least one of the first films including an electrode layer and a charge storage layer provided on a face of the electrode layer via a first insulator, and a semiconductor layer provided on a face of the charge storage layer via a second insulator. The device further includes at least one of a first portion including nitrogen and provided between the first insulator and the charge storage layer with an air gap provided in the first insulator, a second portion including nitrogen, provided between the charge storage layer and the second insulator, and including a portion protruding toward the charge storage layer, and a third portion including nitrogen and provided between the second insulator and the semiconductor layer with an air gap provided in the first insulator.
    Type: Application
    Filed: December 29, 2020
    Publication date: April 22, 2021
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Keiichi SAWA, Kazuhiro MATSUO, Kazuhisa MATSUDA, Hiroyuki YAMASHITA, Yuta SAITO, Shinji MORI, Masayuki TANAKA, Kenichiro TORATANI, Atsushi TAKAHASHI, Shouji HONDA
  • Publication number: 20210106101
    Abstract: In this molded surface fastener, plural engaging elements having a stem portion and an engaging head portion formed integrally on the stem portion are standing on the base portion, at least one pawl portion having a pawl width dimension narrower than a width dimension at a boundary between the stem portion and the engaging head portion is protruded on an outer peripheral edge part of the engaging head portion, and a back surface of pawl of the pawl portion is formed at different angles with respect to a back surface of head portion of the engaging head portion. Such a molded surface fastener of the present invention has a substantial engaging force with respect to a female surface fastener and can make a texture of its surface comfortable.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventors: Yoshiyuki Fukuhara, Hiroyuki Yamashita, Takahiro Fuse, Isamu Michihata, Yui Hashimoto
  • Patent number: 10974511
    Abstract: A liquid discharge apparatus includes a head including a nozzle plate having a plurality of nozzles lined in a row and configured to discharge a liquid, a conveyor configured to convey the liquid application target, and a liquid receptacle configured to receive the liquid discharged from the head. The conveyor defines a conveyance passage of a liquid application target to which the head applies the liquid. The liquid receptacle has an opening through which the liquid discharged from the head passes. A longitudinal direction of the opening is along a movement direction of the liquid application target. A width of the opening is greater than a width of the liquid application target in a direction orthogonal to the movement direction.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: April 13, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shinya Tanaka, Hiroyuki Yamashita
  • Patent number: 10923487
    Abstract: A semiconductor memory device includes a channel layer and a gate electrode. A first insulating layer is between the semiconductor layer and the gate electrode. A second insulating layer is between the first insulating layer and the gate electrode. A storage region is between the first insulating layer and the second insulating layer. The storage region comprises metal or semiconductor material. A coating layer comprises silicon and nitrogen and surrounds the storage region. The coating layer is between the storage region and the second insulating layer and between the storage region and the first insulating layer.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: February 16, 2021
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Hiroyuki Yamashita, Shinji Mori, Keiichi Sawa, Kazuhiro Matsuo, Kazuhisa Matsuda, Yuta Saito, Atsushi Takahashi, Masayuki Tanaka
  • Patent number: 10910401
    Abstract: In one embodiment, a semiconductor device includes a substrate, insulating films and first films alternately stacked on the substrate, at least one of the first films including an electrode layer and a charge storage layer provided on a face of the electrode layer via a first insulator, and a semiconductor layer provided on a face of the charge storage layer via a second insulator. The device further includes at least one of a first portion including nitrogen and provided between the first insulator and the charge storage layer with an air gap provided in the first insulator, a second portion including nitrogen, provided between the charge storage layer and the second insulator, and including a portion protruding toward the charge storage layer, and a third portion including nitrogen and provided between the second insulator and the semiconductor layer with an air gap provided in the first insulator.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: February 2, 2021
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Keiichi Sawa, Kazuhiro Matsuo, Kazuhisa Matsuda, Hiroyuki Yamashita, Yuta Saito, Shinji Mori, Masayuki Tanaka, Kenichiro Toratani, Atsushi Takahashi, Shouji Honda
  • Publication number: 20210013225
    Abstract: In one embodiment, a semiconductor storage device includes a stacked body in which a plurality of conducting layers are stacked through a plurality of insulating layers in a first direction, a semiconductor layer penetrating the stacked body, extending in the first direction and including metal atoms, and a memory film including a first insulator, a charge storage layer and a second insulator that are provided between the stacked body and the semiconductor layer. The semiconductor layer surrounds a third insulator penetrating the stacked body and extending in the first direction, and at least one crystal grain in the semiconductor layer has a shape surrounding the third insulator.
    Type: Application
    Filed: March 5, 2020
    Publication date: January 14, 2021
    Applicant: Kioxia Corporation
    Inventors: Yuta SAITO, Shinji MORI, Atsushi TAKAHASHI, Toshiaki YANASE, Keiichi SAWA, Kazuhiro MATSUO, Hiroyuki YAMASHITA
  • Publication number: 20200385149
    Abstract: A flying object includes a housing formed by combining a plurality of panels having reinforced fibers and a matrix resin, and a low melting point member having a lower melting point than that of at least the reinforced fiber, wherein the housing is configured to be breakable according to a change of the low melting point member during either of fusion or sublimation.
    Type: Application
    Filed: May 4, 2020
    Publication date: December 10, 2020
    Inventors: Tetsuya Gomi, Hiroyuki Yamashita, Takahira Kawata, Koh Kamachi
  • Publication number: 20200373328
    Abstract: A semiconductor device includes a semiconductor layer containing metal atoms, a charge storage layer provided on a surface of the semiconductor layer via a first insulating film, and an electrode layer provided on a surface of the charge storage layer via a second insulating film. The thickness of the first insulating film is 5 nm or more and 10 nm or less. The concentration of the metal atoms in the semiconductor layer is 5.0×1017 [EA/cm3] or higher and 1.3×1020 [EA/cm3] or lower.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Yuta SAITO, Shinji MORI, Keiichi SAWA, Kazuhisa MATSUDA, Kazuhiro MATSUO, Hiroyuki YAMASHITA
  • Publication number: 20200305558
    Abstract: Provided is a molded surface fastener capable of stably having high engaging strength with respect to a loop member. The molded surface fastener of the present invention includes a base portion and a plurality of engaging elements provided with a stem portion and an engaging portion, and is formed of synthetic resin containing lubricant at 0.15 wt % or more and 1.00 wt % or less. A top end surface of the engaging element is formed to be flat, and the engaging portion has a hanging portion which hangs down obliquely downward toward the base portion.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Inventors: Makoto Takekawa, Yoshiyuki Fukuhara, Hiroyuki Yamashita, Kyoichi Yuki