Patents by Inventor Yoshinobu Yamanouchi

Yoshinobu Yamanouchi 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 emitting diode
    Patent number: 6791116
    Abstract: In a light emitting diode, a scattering material-containing light guiding/scattering layer is provided which directly receives light emitted from a light emitting element. The scattering material contained in the light guiding/scattering layer irregularly reflects and scatters the incident light. The scattered light is led to a fluorescence emitting layer formed of a transparent binder containing a phosphor material. The probability of incidence of light having high optical density, which has been emitted from the light emitting element, directly to the phosphor material contained in the fluorescence emitting layer is lowered, and light can be radiated from the whole fluorescence emitting layer. Therefore, uniform light having a desired color can be radiated with high efficiency from the light emitting diode.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: September 14, 2004
    Assignees: Toyoda Gosei Co., Ltd., Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuji Takahashi, Shigeru Fukumoto, Katsunori Arakane, Atsuo Hirano, Kunihiro Hadame, Kunihiko Obara, Toshihide Maeda, Hiromi Kitahara, Kenichi Koya, Yoshinobu Yamanouchi
  • Light emitting diode
    Publication number: 20030214233
    Abstract: In a light emitting diode, a scattering material-containing light guiding/scattering layer is provided which directly receives light emitted from a light emitting element. The scattering material contained in the light guiding/scattering layer irregularly reflects and scatters the incident light. The scattered light is led to a fluorescence emitting layer formed of a transparent binder containing a phosphor material. The probability of incidence of light having high optical density, which has been emitted from the light emitting element, directly to the phosphor material contained in the fluorescence emitting layer is lowered, and light can be radiated from the whole fluorescence emitting layer. Therefore, uniform light having a desired color can be radiated with high efficiency from the light emitting diode.
    Type: Application
    Filed: April 28, 2003
    Publication date: November 20, 2003
    Applicant: Toyoda Gosei Co., Ltd.
    Inventors: Yuji Takahashi, Shigeru Fukumoto, Katsunori Arakane, Atsuo Hirano, Kunihiro Hadame, Kunihiko Obara, Toshihide Maeda, Hiromi Kitahara, Kenichi Koya, Yoshinobu Yamanouchi