Patents by Inventor Hyun-Dae Hah

Hyun-Dae Hah 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).

  • Organic-inorganic hybrid photopolymer composition with enhanced diffraction efficiency and decrease volume reduction
    Publication number: 20070112118
    Abstract: The present invention relates to an organic-inorganic hybrid composition comprising: (a) a copolymer matrix having an organic functional group; (b) an inorganic nanoparticle having an inorganic functional group on the surface of the nanoparticle; (c) a photopolymerizable monomer; (d) a photoinitiator, and (e) a photosensitizer.
    Type: Application
    Filed: July 31, 2006
    Publication date: May 17, 2007
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Jung-Ki Park, Won-Sun Kim, Yong-Cheol Jeong, Hyun-Dae Hah