Patents by Inventor Takaya Ueno

Takaya Ueno 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: 20210225814
    Abstract: A light emitting device (1) includes: three or more light emitting units (10, 20, 30) that individually include blue light emitting element, a wavelength range of the blue light emitting element accommodated in respective packages being different from each other. The light emitting device mixes output lights from the light emitting units (10, 20, 30) to output white light of a predetermined chromaticity. In an xy chromaticity diagram, the chromaticity of the output light from each of light emitting units (10, 20, 30) is located at a distance from the predetermined chromaticity. The difference between the chromaticity of the output light from each of the light emitting units (10, 20, 30) and the predetermined chromaticity is not greater than 0.04.
    Type: Application
    Filed: October 30, 2017
    Publication date: July 22, 2021
    Applicant: Sanken Electric Co., Ltd.
    Inventors: Takaya UENO, Hitoshi MUROFUSHI
  • Patent number: 10770629
    Abstract: A light emitting device includes: a substrate (40); blue light emitting elements (10) arranged on the main surface of the substrate (40); and a phosphor sheet (30) containing a phosphor that is excited by emission light from the blue light emitting elements and emits excitation light, the phosphor sheet (30) being disposed above the blue light emitting elements (30), wherein the blue light emitting elements (10) includes first blue light emitting elements (11) which emit first emission light having a first wavelength taken as a peak wavelength of a light emission spectrum, and second blue light emitting elements (12) which emit second emission light having a second wavelength taken as a peak wavelength of a light emission spectrum, and the second wavelength being a longer wavelength than the first wavelength by a wavelength difference of at least 10 nm.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: September 8, 2020
    Assignee: Sanken Electric Co., Ltd.
    Inventors: Tsutomu Yokota, Takaya Ueno, Masanori Hoshino, Yoshinori Tanaka, Hitoshi Murofushi
  • Publication number: 20190088835
    Abstract: A light emitting device includes: a substrate (40); blue light emitting elements (10) arranged on the main surface of the substrate (40); and a phosphor sheet (30) containing a phosphor that is excited by emission light from the blue light emitting elements and emits excitation light, the phosphor sheet (30) being disposed above the blue light emitting elements (30), wherein the blue light emitting elements (10) includes first blue light emitting elements (11) which emit first emission light having a first wavelength taken as a peak wavelength of a light emission spectrum, and second blue light emitting elements (12) which emit second emission light having a second wavelength taken as a peak wavelength of a light emission spectrum, and the second wavelength being a longer wavelength than the first wavelength by a wavelength difference of at least 10 nm.
    Type: Application
    Filed: January 31, 2017
    Publication date: March 21, 2019
    Applicant: Sanken Electric Co., Ltd.
    Inventors: Tsutomu YOKOTA, Takaya UENO, Masanori HOSHINO, Yoshinori TANAKA, Hitoshi MUROFUSHI
  • Patent number: 8241437
    Abstract: The present invention provides a metal sheet rolling method of rolling a metal sheet with a pair of rolls, as well as a rolled sheet manufactured by the metal sheet rolling method. In the metal sheet rolling method, respective interfaces between the pair of rolls and the metal sheet have mutually different frictions. Additionally at least one of the interfaces may be lubricated by a procedure other than lubrication by coating of a liquid lubricant agent. Alternatively at least one of the interfaces may be subjected to surface treatment by a procedure other than lubrication, or otherwise the pair of rolls may be made of mutually different materials.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: August 14, 2012
    Assignee: NGK Insulators, Ltd.
    Inventors: Hiroshi Utsunomiya, Tetsuo Sakai, Takaya Ueno, Naokuni Muramatsu
  • Publication number: 20100009212
    Abstract: The present invention provides a metal sheet rolling method of rolling a metal sheet with a pair of rolls, as well as a rolled sheet manufactured by the metal sheet rolling method. In the metal sheet rolling method, respective interfaces between the pair of rolls and the metal sheet have mutually different frictions. Additionally at least one of the interfaces may be lubricated by a procedure other than lubrication by coating of a liquid lubricant agent. Alternatively at least one of the interfaces may be subjected to surface treatment by a procedure other than lubrication, or otherwise the pair of rolls may be made of mutually different materials.
    Type: Application
    Filed: August 26, 2009
    Publication date: January 14, 2010
    Applicant: NGK Insulators, Ltd.
    Inventors: Hiroshi UTSUNOMIYA, Tetsuo Sakai, Takaya Ueno, Naokuni Muramatsu