Patents by Inventor Sang-Hyeok Im

Sang-Hyeok Im 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).

  • Alkali-free glass and preparation thereof
    Patent number: 8883665
    Abstract: The present invention provides the composition of an alkali-free glass composition containing no alkali metal oxide and the preparation thereof. The alkali-free glass comprising substantially no alkali metal oxide according to the present invention comprises 60 to 70 wt % of SiO2; 1 to 3.5 wt % of B2O3; 1 to 13 wt % of Al2O3; 8.5 to 14 wt % of MgO; 1 to 3 wt % of CaO; 4 to 7 wt % of SrO; and 0.5 to 7 wt % of BaO, based on the total weight of oxides present therein.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: November 11, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dong-Kwon Lee, Sang-Kook Kim, In-Ki Hong, Jung-Min Ko, Sang-Hyeok Im
  • ALKALI-FREE GLASS AND PREPARATION THEREOF (As Amended)
    Publication number: 20130345040
    Abstract: The present invention provides the composition of an alkali-free glass composition containing no alkali metal oxide and the preparation thereof. The alkali-free glass comprising substantially no alkali metal oxide according to the present invention comprises 60 to 70 wt % of SiO2; 1 to 3.5 wt % of B2O3; 1 to 13 wt % of Al2O3; 8.5 to 14 wt % of MgO; 1 to 3 wt % of CaO; 4 to 7 wt % of SrO; and 0.5 to 7 wt % of BaO, based on the total weight of oxides present therein.
    Type: Application
    Filed: August 29, 2013
    Publication date: December 26, 2013
    Applicant: LG CHEM, LTD.
    Inventors: Dong-Kwon LEE, Sang-Kook Kim, In-Ki Hong, Jung-Min Ko, Sang-Hyeok Im