Patents by Inventor Park Joung-Kyu

Park Joung-Kyu 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).

  • Phosphor and light emitting device using the same
    Publication number: 20070170840
    Abstract: There are provided a phosphor and a light emitting device using the same, wherein in order to embody a desired wavelength of light, in a state where a first phosphor and a second phosphor are mixed in a light transmitting member, both of light excited by an excitation light source and the excitation light source are emitted to the outside and embody a white light source. Further, the first phosphor has a chemical formula of Sr4-xMgyBazSi2O8:Eux2+ (0<x<1, 0?y?1, 0?z?1) and the second phosphor has a chemical formula of Sr3-xSiO5:Eu2+x (0<x?1).
    Type: Application
    Filed: July 21, 2005
    Publication date: July 26, 2007
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Kim Chang-Hae, Park Joung-Kyu, Kim Sang-Kee, Kim Chung-Ryeol, Choi Jae