Patents by Inventor Ki-jong Han

Ki-jong Han 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).

  • Positive Electrode and Lithium Secondary Battery Manufactured Using the Same
    Publication number: 20240154127
    Abstract: A positive electrode including a positive electrode active material layer disposed on at least one surface of a positive electrode current collector, the positive electrode active material layer including a lithium transition metal phosphate, a fluorine-based binder, and a conductive material. The lithium transition metal phosphate includes a carbon coating layer formed on a surface thereof, and a ratio (B/A) of a total weight (B) of the fluorine-based binder to a total weight (A) of carbon of the conductive material and the lithium transition metal phosphate in the positive electrode active material layer is 0.7 to 1.7.
    Type: Application
    Filed: October 31, 2023
    Publication date: May 9, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Geum Jae Han, O Jong Kwon, Kwang Jin Kim, Ki Woong Kim, In Gu An, Jung Hun Choi, Da Young Lee, Jin Su Sung, Jeong Hwa Park
  • Red fluorescent material and organic electroluminescent device containing same
    Patent number: 6821651
    Abstract: A novel red fluorescent material of formula (I) of the present invention has an improved thermostability, and an organic electroluminescent device containing the fluorescent material of formula (I) can provide color ranging from orange to deep red.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: November 23, 2004
    Assignee: Nessdisplay Co., Ltd.
    Inventors: Ki-Jong Han, Ha-Keun Hwang, Dae-Seok Jun, Ji-Hwan Keum, Young-Kyoo Kim
  • Novel red fluorescent material and organic electroluminescent device containing same
    Publication number: 20040014392
    Abstract: A novel red fluorescent material of formula (I) of the present invention has an improved thermostability, and an organic electroluminescent device containing the fluorescent material of formula (I) can provide color ranging from orange to deep red.
    Type: Application
    Filed: May 19, 2003
    Publication date: January 22, 2004
    Inventors: Ki-Jong Han, Ha-Keun Hwang, Dae-Seok Jun, Ji-Hwan Keum, Young-Kyoo Kim
  • Diamine hole transport agent and organic electroluminescent device containing same
    Patent number: 6342637
    Abstract: A novel diamine compound of formula (I) of the present invention having a high glass transition temperature is useful as an improved hole transport agent, and an organic electroluminescent device containing the diamine compound of formula (I) has good thermal and mechanical stabilities, and prolonged lifetime.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: January 29, 2002
    Assignee: Nessdisplay Co., Ltd.
    Inventors: Ki-jong Han, Youngkoo Kim, Jae-Gyoung Lee, Dong-Kwon Choi
  • Diamine hole transport agent and organic electroluminescent device containing same
    Patent number: 6337404
    Abstract: A novel diamine compound of formula (I) of the present invention having a high glass transition temperature is useful as an improved hole transport agent, and an organic electroluminescent device containing the diamine compound of formula (I) has good thermal and mechanical stabilities, and prolonged lifetime.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: January 8, 2002
    Assignee: Nessdisplay Co., Ltd.
    Inventors: Ki-jong Han, Youngkyoo Kim, Jae-Gyoung Lee, Dong-Kwon Choi