Patents by Inventor Chang Hoon HONG

Chang Hoon HONG 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).

  • Precursor solution for thin film deposition and thin film forming method using same
    Patent number: 11972941
    Abstract: Proposed is a precursor composition for forming a metal film including a zirconium compound represented by any one of Chemical Formulas 1 to 3 and a hafnium compound represented by any one of Chemical Formulas 4 to 6.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: April 30, 2024
    Assignee: SK TRICHEM
    Inventors: Chang Sung Hong, Yong Joo Park, Tae Hoon Oh, In Chun Hwang, Sang Kyung Lee, Dong Hyun Kim
  • Sialon composite and cutting tools made thereof
    Patent number: 10221102
    Abstract: A SiAlON composite includes a SiAlON phase including ?-SiAlON phase, ?-SiAlON phase and grain boundary phase. The SiAlON composite is prepared from a starting powder mixture including a silicon nitride powder and at least one powder providing aluminum, oxygen, nitrogen, yttrium (Y) and erbium (Er) to the SiAlON composite. The SiAlON composite contains the SiAlON phase of at least 90 vol %, z-value of the ?-SiAlON phase ranges between 0.27 and 0.36 and thermal diffusivity of the SiAlON composite is equal to or greater than 2.4 (mm2/sec) and equal to or less than 5.2 (mm2/sec).
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: March 5, 2019
    Assignee: TaeguTec, Ltd.
    Inventors: Sung Su Chun, Dae Yeop Lee, Geun Ho Park, Chang Hoon Hong
  • Ceramic material and cutting tools made thereof
    Patent number: 10000420
    Abstract: A ceramic material includes of ?-sialon (Si(6-z)AlzOzN(8-z)), polytype 15R, an intergranular phase, and yttrium. The polytype 15R includes twin grains.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: June 19, 2018
    Assignee: TaeguTec, Ltd.
    Inventors: Sung Su Chun, Dae Yeop Lee, Geun Ho Park, Chang Hoon Hong
  • SIALON COMPOSITE AND CUTTING TOOLS MADE THEREOF
    Publication number: 20180134627
    Abstract: A SiAlON composite includes a SiAlON phase including ?-SiAlON phase, ?-SiAlON phase and grain boundary phase. The SiAlON composite is prepared from a starting powder mixture including a silicon nitride powder and at least one powder providing aluminum, oxygen, nitrogen, yttrium (Y) and erbium (Er) to the SiAlON composite. The SiAlON composite contains the SiAlON phase of at least 90 vol %, z-value of the ?-SiAlON phase ranges between 0.27 and 0.36 and thermal diffusivity of the SiAlON composite is equal to or greater than 2.4 (mm2/sec) and equal to or less than 5.2 (mm2/sec).
    Type: Application
    Filed: April 22, 2016
    Publication date: May 17, 2018
    Inventors: Sung Su CHUN, Dae Yeop LEE, Geun Ho PARK, Chang Hoon HONG
  • CERAMIC MATERIAL AND CUTTING TOOLS MADE THEREOF
    Publication number: 20170334790
    Abstract: A ceramic material includes of ?-sialon (Si(6-z)AlzOzN(8-z)), polytype 15R, an intergranular phase, and yttrium. The polytype 15R includes twin grains.
    Type: Application
    Filed: November 13, 2015
    Publication date: November 23, 2017
    Applicant: TaeguTec, Ltd.
    Inventors: SUNG SU CHUN, Dae Yeop LEE, Geun Ho PARK, Chang Hoon HONG