Patents by Inventor Haruto Nagakusa

Haruto Nagakusa 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).

  • Light reflector, planar light source and illumination device using the same
    Patent number: 8408774
    Abstract: A light reflector comprising a resin film having a reflection angle peak ratio [i.e. (reflection peak value when a light ray is applied at an angle of 45° to the perpendicular line of the reflection surface)/(reflection peak value when a light ray is applied at an angle of 15° to the perpendicular line of the reflection surface)] of from 1.3 to 10, and a specular reflectance [i.e. (reflectance)?(diffuse reflectance)] of from 1.4% to 10%. This light reflector can prevent generation of a bright line even when it is used in an illumination device having a plurality of light sources.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: April 2, 2013
    Assignee: Yupo Corporation
    Inventors: Takahiko Ueda, Hiroshi Koyama, Haruto Nagakusa
  • LIGHT REFLECTOR, PLANAR LIGHT SOURCE AND ILLUMINATION DEVICE USING THE SAME
    Publication number: 20090262539
    Abstract: A light reflector comprising a resin film having a reflection angle peak ratio [i.e. (reflection peak value when a light ray is applied at an angle of 45° to the perpendicular line of the reflection surface)/(reflection peak value when a light ray is applied at an angle of 15° to the perpendicular line of the reflection surface)] of from 1.3 to 10, and a specular reflectance [i.e. (reflectance)-(diffuse reflectance)] of from 1.4% to 10%. This light reflector can prevent generation of a bright line even when it is used in an illumination device having a plurality of light sources.
    Type: Application
    Filed: October 30, 2006
    Publication date: October 22, 2009
    Applicant: YUPO CORPORATION
    Inventors: Takahiko Ueda, Hiroshi Koyama, Haruto Nagakusa
  • Injection molding die, injection molding method, and weldless molded product
    Publication number: 20060237874
    Abstract: A mold for injection molding which is comprised of a mold cavity having an inside shape fit to an outside shape of a target product and a temporary space being communicated with the mold cavity and is eliminated before an amount of a molten material being injected to the mold cavity reaches the capacity of the mold cavity.
    Type: Application
    Filed: January 20, 2004
    Publication date: October 26, 2006
    Applicant: TECHNO POLYMER CO., LTD.
    Inventors: Fumio Kurihara, Haruto Nagakusa