Patents by Inventor Mutuo Masuda

Mutuo Masuda 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).

  • White light emitting phosphor and light emitting module using the same
    Patent number: 7618557
    Abstract: This invention provides a phosphor capable of emitting a white light by itself and a light emitting module using the phosphor. A white light emitting phosphor is represented by the following formula, and it is preferable that an excitation peak wavelength may be in a range of 350 to 420 nm: Ba4?x?y?zMgxSi2O8: Euy, Mnz (0.7?x<1, 0<y and 0<z). The white light emitting phosphor can constitute the light emitting module with a semiconductor light emitting device having an emission peak wavelength from 350 to 420 nm.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: November 17, 2009
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Hisayoshi Daicho, Mutuo Masuda, Hiroyuki Hayashi
  • WHITE LIGHT EMITTING PHOSPHOR AND LIGHT EMITTING MODULE USING THE SAME
    Publication number: 20080123324
    Abstract: This invention provides a phosphor capable of emitting a white light by itself and a light emitting module using the phosphor. A white light emitting phosphor is represented by the following formula, and it is preferable that an excitation peak wavelength may be in a range of 350 to 420 nm: Ba4-x-y-zMgxSi2O8: Euy, Mn2 (0.7?x<1, 0<y and 0<z). The white light emitting phosphor can constitute the light emitting module with a semiconductor light emitting device having an emission peak wavelength from 350 to 420 nm.
    Type: Application
    Filed: July 3, 2007
    Publication date: May 29, 2008
    Applicant: KOITO MANUFACTURING CO., LTD
    Inventors: Hisayoshi Daicho, Mutuo Masuda, Hiroyuki Hayashi