Patents by Inventor Ryohei Yamashita

Ryohei 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: 20150318458
    Abstract: A light emitting device mount includes a positive lead terminal, a negative lead terminal, and a resin portion. Each of the positive lead terminal and the negative lead terminal includes a first main surface, a second main surface opposite to the first main surface in a thickness direction of each of the positive lead terminal and the negative lead terminal, and an end surface which is provided between the first main surface and the second main surface and which includes a first recessed surface area and a second recessed surface area. The first recessed surface area extends from the first main surface. The second recessed surface area extends from the second main surface, includes a closest point closest to the first main surface, and includes an extension part that extends outward of the closest point and toward the second main surface.
    Type: Application
    Filed: July 15, 2015
    Publication date: November 5, 2015
    Applicant: NICHIA CORPORATION
    Inventors: Ryohei YAMASHITA, Ryoichi YOSHIMOTO
  • Publication number: 20150300378
    Abstract: The energy efficiency is increased by reducing the throttle/relief loss in the delivery flow of the hydraulic pump caused by the bleed-off control, while also making it possible to control the delivery pressure of the hydraulic pump according to the operation amount of the control lever unit and improving the operational performance. A controller 6 includes a target pump pressure setting unit 32 which calculates a target pump delivery pressure which increases with the increase in an operation amount signal from an operation amount detector 20A/20B based on the operation amount signal and a pump flow rate upper limit setting unit 33 which calculates a pump flow rate upper limit which increases with the increase in the operation amount signal based on the operation amount signal.
    Type: Application
    Filed: November 5, 2013
    Publication date: October 22, 2015
    Inventors: Tsutomu Udagawa, Akira Nakayama, Ryohei Yamashita, Shiho Izumi, Manabu Edamura, Kouji Ishikawa, Hidetoshi Satake
  • Patent number: 9159893
    Abstract: A light emitting device includes a substantially cuboid package made up of a molded article and a lead that is embedded in the molded article, and a light emitting element that is installed in the package. The lead has a connector where the light emitting element is installed, and a terminal part and an exposed part that are linked to the connector. The package has a bottom face, a front face that is a light emission face contiguous with the bottom face, and a rear face that is contiguous with the bottom face and is opposite the front face. The first terminal part and the exposed part are linked to the rear face side of the connector are exposed from the molded article and contiguous with the bottom face and the rear face, and are isolated at the bottom face.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: October 13, 2015
    Assignee: NICHIA CORPORATION
    Inventor: Ryohei Yamashita
  • Patent number: 9117806
    Abstract: A mount includes a terminal, and a resin portion. The terminal includes a first surface, a second surface, and an end surface having first and second recessed areas that are extend from the first and second surfaces, respectively. The resin portion is integrally formed with the terminal, and at least partially covers the end surface so that the first and second surfaces are at least partially exposed. The resin portion forms a recessed part to accommodate the light emitting device. The second recessed area includes a closest point that is positioned closest to the first surface, and an extension part that extends outward of the closest point and toward the second surface side. The extension part is formed at least on opposing end surfaces of the pair of positive and negative lead terminal. The first recessed area is arranged on the exterior side relative to the closest point.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: August 25, 2015
    Assignee: NICHIA CORPORATION
    Inventors: Ryohei Yamashita, Ryoichi Yoshimoto
  • Patent number: 9093619
    Abstract: The light emitting device comprises a substrate (2), a positive electrode (6) and a negative electrode (4) formed on the substrate (2), a light emitting diode (8) connected to the positive electrode (6) and the negative electrode (4), the transparent resin (12 and 14) that covers the light emitting diode (8), a fluorescent material (16) that absorbs at least part of light emitted by the light emitting diode (8) and converts it to light of longer wavelength, and the lens that changes the direction of light emission from the light emitting diode (8) and/or the fluorescent material (16). The resin (12 and 14) includes the fluorescent material (16) and is formed so as to constitute the lens of substantially semi-cylindrical shape, and the fluorescent material (16) included in the resin (12 and 14) is distributed with a higher concentration in a region near the surface of the light emitting diode (8) than in a region near the surface of the portion that constitutes the lens.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: July 28, 2015
    Assignee: NICHIA CORPORATION
    Inventors: Tomohide Miki, Kenji Takine, Ryohei Yamashita
  • Patent number: 9018653
    Abstract: A light emitting device includes a light emitting element and a package. The package is made up of a molded article and a lead that is embedded in the molded article. The lead includes a mounting part on which the light emitting element is mounted, a terminal part that is linked to the mounting part, and an exposed part. The package has a front face that is a light emitting face, a rear face opposite the front face, and a bottom face contiguous with the front face and the rear face. The light emitting element is mounted on the front face side of the mounting part. The exposed part is linked to the rear face side of the mounting part, and is exposed from the molded article at the bottom face and the rear face. The terminal part is exposed from the molded article at the bottom face.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: April 28, 2015
    Assignee: Nichia Corporation
    Inventor: Ryohei Yamashita
  • Publication number: 20140366369
    Abstract: A method for manufacturing a circuit board constituted by a light emitting device and a mounting board includes the steps of: conveying the light emitting device onto the mounting board in a state in which a top face is chucked by a nozzle so that the nozzle and an exposed part of a first terminal part of the light emitting device are in contact; and placing the light emitting device onto the mounting board so that the first terminal part and a wiring component are in contact in a state in which the top face is chucked by the nozzle.
    Type: Application
    Filed: September 5, 2014
    Publication date: December 18, 2014
    Inventors: Ryohei YAMASHITA, Tomohide MIKI, Hiroto TAMAKI
  • Publication number: 20140361318
    Abstract: The light emitting device comprises a substrate (2), a positive electrode (6) and a negative electrode (4) formed on the substrate (2), a light emitting diode (8) connected to the positive electrode (6) and the negative electrode (4), the transparent resin (12 and 14) that covers the light emitting diode (8), a fluorescent material (16) that absorbs at least part of light emitted by the light emitting diode (8) and converts it to light of longer wavelength, and the lens that changes the direction of light emission from the light emitting diode (8) and/or the fluorescent material (16). The resin (12 and 14) includes the fluorescent material (16) and is formed so as to constitute the lens of substantially semi-cylindrical shape, and the fluorescent material (16) included in the resin (12 and 14) is distributed with a higher concentration in a region near the surface of the light emitting diode (8) than in a region near the surface of the portion that constitutes the lens.
    Type: Application
    Filed: August 21, 2014
    Publication date: December 11, 2014
    Inventors: Tomohide MIKI, Kenji TAKINE, Ryohei YAMASHITA
  • Patent number: 8853933
    Abstract: A light emitting device comprises a light emitting element and a package constituted by a molded article and a first lead and a second lead embedded in the molded article, and having a bottom face, a top face disposed opposite to the bottom face, and a light emission face connected to the bottom face and the top face. The first lead has a first terminal part exposed at the bottom face exposed at the top face. The exposed part is provided more toward the center of the package than the first terminal part.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: October 7, 2014
    Assignee: Nichia Corporation
    Inventors: Ryohei Yamashita, Tomohide Miki, Hiroto Tamaki
  • Publication number: 20140264426
    Abstract: A mount includes a terminal, and a resin portion. The terminal includes a first surface, a second surface, and an end surface having first and second recessed areas that are extend from the first and second surfaces, respectively. The resin portion is integrally formed with the terminal, and at least partially covers the end surface so that the first and second surfaces are at least partially exposed. The resin portion forms a recessed part to accommodate the light emitting device. The second recessed area includes a closest point that is positioned closest to the first surface, and an extension part that extends outward of the closest point and toward the second surface side. The extension part is formed at least on opposing end surfaces of the pair of positive and negative lead terminal. The first recessed area is arranged on the exterior side relative to the closest point.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: NICHIA CORPORATION
    Inventors: Ryohei YAMASHITA, Ryoichi YOSHIMOTO
  • Patent number: 8836210
    Abstract: The light emitting device comprises a substrate (2), a positive electrode (6) and a negative electrode (4) formed on the substrate (2), a light emitting diode (8) connected to the positive electrode (6) and the negative electrode (4), the transparent resin (12 and 14) that covers the light emitting diode (8), a fluorescent material (16) that absorbs at least part of light emitted by the light emitting diode (8) and converts it to light of longer wavelength, and the lens that changes the direction of light emission from the light emitting diode (8) and/or the fluorescent material (16). The resin (12 and 14) includes the fluorescent material (16) and is formed so as to constitute the lens of substantially semi-cylindrical shape, and the fluorescent material (16) included in the resin (12 and 14) is distributed with a higher concentration in a region near the surface of the light emitting diode (8) than in a region near the surface of the portion that constitutes the lens.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: September 16, 2014
    Assignee: Nichia Corporation
    Inventors: Tomohide Miki, Kenji Takine, Ryohei Yamashita
  • Publication number: 20140245728
    Abstract: The aim of the present invention lies in providing a hydraulic drive system for a working vehicle, in which pressure oil can be supplied to an accumulator when a working device is raised, and in which, when the working device is held in a raised state, except during loaded travel, lowering of the working device caused by leakage of pressure oil inside a bottom chamber of a hydraulic cylinder into a hydraulic oil tank through a gap in a control valve can be reliably prevented. When a working device (2) is raised, oil ejected from a main pump (13) is introduced through an accumulator valve (61) to an accumulator (40). Further, when the working device (2) is held in a raised state, except during loaded travel, leakage of pressure oil inside a bottom chamber (11a) of a lift arm cylinder (11) into a hydraulic oil tank (17) through a gap in a control valve (20) for the lift arm is prevented by means of a poppet (71) of a load retention valve (70).
    Type: Application
    Filed: October 2, 2012
    Publication date: September 4, 2014
    Inventors: Yoshinobu Kobayashi, Ryohei Yamashita, Takeshi Kobayashi
  • Publication number: 20140017829
    Abstract: The light emitting device comprises a substrate (2), a positive electrode (6) and a negative electrode (4) formed on the substrate (2), a light emitting diode (8) connected to the positive electrode (6) and the negative electrode (4), the transparent resin (12 and 14) that covers the light emitting diode (8), a fluorescent material (16) that absorbs at least part of light emitted by the light emitting diode (8) and converts it to light of longer wavelength, and the lens that changes the direction of light emission from the light emitting diode (8) and/or the fluorescent material (16). The resin (12 and 14) includes the fluorescent material (16) and is formed so as to constitute the lens of substantially semi-cylindrical shape, and the fluorescent material (16) included in the resin (12 and 14) is distributed with a higher concentration in a region near the surface of the light emitting diode (8) than in a region near the surface of the portion that constitutes the lens.
    Type: Application
    Filed: September 12, 2013
    Publication date: January 16, 2014
    Applicant: NICHIA CORPORATION
    Inventors: Tomohide MIKI, Kenji TAKINE, Ryohei YAMASHITA
  • Publication number: 20130334549
    Abstract: In a light emitting device, a first lead has a first terminal part that is contiguous with a first connector. The first terminal part includes a first convex part that is exposed from a molded article at the inner peripheral face of a mounting recess, and a first concave part that is formed in the rear face of the first convex part.
    Type: Application
    Filed: February 3, 2012
    Publication date: December 19, 2013
    Applicant: NICHIA CORPORATION
    Inventor: Ryohei Yamashita
  • Patent number: 8558446
    Abstract: The light emitting device comprises a substrate (2), a positive electrode (6) and a negative electrode (4) formed on the substrate (2), a light emitting diode (8) connected to the positive electrode (6) and the negative electrode (4), the transparent resin (12 and 14) that covers the light emitting diode (8), a fluorescent material (16) that absorbs at least part of light emitted by the light emitting diode (8) and converts it to light of longer wavelength, and the lens that changes the direction of light emission from the light emitting diode (8) and/or the fluorescent material (16). The resin (12 and 14) includes the fluorescent material (16) and is formed so as to constitute the lens of substantially semi-cylindrical shape, and the fluorescent material (16) included in the resin (12 and 14) is distributed with a higher concentration in a region near the surface of the light emitting diode (8) than in a region near the surface of the portion that constitutes the lens.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: October 15, 2013
    Assignee: Nichia Corporation
    Inventors: Tomohide Miki, Kenji Takine, Ryohei Yamashita
  • Publication number: 20130153942
    Abstract: A light emitting device includes a light emitting element and a package. The package is made up of a molded article and a lead that is embedded in the molded article. The lead includes a mounting part on which the light emitting element is mounted, a terminal part that is linked to the mounting part, and an exposed part. The package has a front face that is a light emitting face, a rear face opposite the front face, and a bottom face contiguous with the front face and the rear face. The light emitting element is mounted on the front face side of the mounting part. The exposed part is linked to the rear face side of the mounting part, and is exposed from the molded article at the bottom face and the rear face. The terminal part is exposed from the molded article at the bottom face.
    Type: Application
    Filed: September 1, 2011
    Publication date: June 20, 2013
    Applicant: NICHIA CORPORATION
    Inventor: Ryohei Yamashita
  • Publication number: 20130153952
    Abstract: A light emitting device includes a substantially cuboid package and a light emitting element. The package is made up of a molded article, and first and second leads each embedded in the molded article. The first lead has a first terminal component exposed at the boundary between a first side face, a bottom face, and a rear face contiguous with the bottom face and opposite a light emission face. The second lead has a second terminal component exposed at the boundary between a second side face opposite the first side face, the bottom face, and the rear face. The first terminal component has a first terminal concavity whose opening is contiguous with the first side face, the bottom face, and the rear face. The second terminal component has a second terminal concavity whose opening is contiguous with the second side face, the bottom face, and the rear face.
    Type: Application
    Filed: September 1, 2011
    Publication date: June 20, 2013
    Applicant: NICHIA CORPORATION
    Inventors: Ryohei Yamashita, Hiroto Tamaki
  • Publication number: 20130156058
    Abstract: A light emitting device includes a substantially cuboid package made up of a molded article and a lead that is embedded in the molded article, and a light emitting element that is installed in the package. The lead has a connector where the light emitting element is installed, and a terminal part and an exposed part that are linked to the connector. The package has a bottom face, a front face that is a light emission face contiguous with the bottom face, and a rear face that is contiguous with the bottom face and is opposite the front face. The first terminal part and the exposed part are linked to the rear face side of the connector are exposed from the molded article and contiguous with the bottom face and the rear face, and are isolated at the bottom face.
    Type: Application
    Filed: September 1, 2011
    Publication date: June 20, 2013
    Applicant: NICHIA CORPORATION
    Inventor: Ryohei Yamashita
  • Publication number: 20120120671
    Abstract: A light emitting device comprises a light emitting element and a package constituted by a molded article and a first lead and a second lead embedded in the molded article, and having a bottom face, a top face disposed opposite to the bottom face, and a light emission face connected to the bottom face and the top face. The first lead has a first terminal part exposed at the bottom face exposed at the top face. The exposed part is provided more toward the center of the package than the first terminal part.
    Type: Application
    Filed: November 8, 2011
    Publication date: May 17, 2012
    Applicant: NICHIA CORPORATION
    Inventors: Ryohei Yamashita, Tomohide Miki, Hiroto Tamaki
  • Patent number: 7710016
    Abstract: The light emitting device comprises a substrate (2), a positive electrode (6) and a negative electrode (4) formed on the substrate (2), a light emitting diode (8) connected to the positive electrode (6) and the negative electrode (4), the transparent resin (12 and 14) that covers the light emitting diode (8), a fluorescent material (16) that absorbs at least part of light emitted by the light emitting diode (8) and converts it to light of longer wavelength, and the lens that changes the direction of light emission from the light emitting diode (8) and/or the fluorescent material (16). The resin (12 and 14) includes the fluorescent material (16) and is formed so as to constitute the lens of substantially semi-cylindrical shape, and the fluorescent material (16) included in the resin (12 and 14) is distributed with a higher concentration in a region near the surface of the light emitting diode (8) than in a region near the surface of the portion that constitutes the lens.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: May 4, 2010
    Assignee: Nichia Corporation
    Inventors: Tomohide Miki, Kenji Takine, Ryohei Yamashita