Patents by Inventor Ji-Hee Park

Ji-Hee Park 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).

  • Heterocyclic compound and organic light-emitting device including the same
    Patent number: 10749118
    Abstract: A heterocyclic compound is represented by Formula 1. In Formulae 1, 1a, and 1b, two adjacent groups among A1 to A8 are each independently connected with a respective * of Formulae 1a or 1b to form a ring, where each * is a carbon atom of Formula 1. An organic light-emitting device includes the heterocyclic compound.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: August 18, 2020
    Assignees: Samsung Display Co., Ltd., SFC Co., Ltd.
    Inventors: Mi-Kyung Kim, Kyung-Hwa Park, Bu-Bae Park, Ji-Hee Park, Bong-Ki Shin, Dong-Hyun Kim, Se-Hun Kim, Hwan-Hee Cho
  • Organic light emitting compound and organic light emitting device comprising the same
    Patent number: 10651397
    Abstract: The present invention relates to an organic light emitting compound and an organic light emitting device comprising the same, and the organic light emitting device employing the organic light emitting compound according to the present invention can be driven at a lower voltage than existing devices employing a phosphorescent host material, and has excellent power efficiency, improved light emission efficiency, and long lifespan characteristics.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: May 12, 2020
    Assignee: SFC CO., LTD.
    Inventors: Bong-ki Shin, Bu-Bae Park, Ji-hee Park, Bong-hyang Lee, Kyung-Hwa Park
  • ORGANIC LIGHT EMITTING COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
    Publication number: 20160260906
    Abstract: The present invention relates to an organic light emitting compound and an organic light emitting device comprising the same, and the organic light emitting device according to the present invention has excellent light emission efficiency and can be driven at low voltages, and thus have power efficiency and long lifespan characteristics.
    Type: Application
    Filed: October 10, 2014
    Publication date: September 8, 2016
    Inventors: Bong-ki SHIN, Bu-Bae PARK, Ji-hee PARK, Bong-hyang LEE, Kyung-Hwa PARK
  • ORGANIC LIGHT EMITTING COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
    Publication number: 20160248024
    Abstract: The present invention relates to an organic light emitting compound and an organic light emitting device comprising the same, and the organic light emitting device employing the organic light emitting compound according to the present invention can be driven at a lower voltage than existing devices employing a phosphorescent host material, and has excellent power efficiency, improved light emission efficiency, and long lifespan characteristics.
    Type: Application
    Filed: October 10, 2014
    Publication date: August 25, 2016
    Inventors: Bong-ki SHIN, Bu-Bae PARK, Ji-hee PARK, Bong-hyang LEE, Kyung-Hwa PARK
  • HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20150380663
    Abstract: A heterocyclic compound is represented by Formula 1. In Formulae 1, 1a, and 1b, two adjacent groups among A1 to A8 are each independently connected with a respective * of Formulae 1a or 1b to form a ring, where each * is a carbon atom of Formula 1. An organic light-emitting device includes the heterocyclic compound.
    Type: Application
    Filed: June 23, 2015
    Publication date: December 31, 2015
    Inventors: Mi-Kyung Kim, Kyung-Hwa Park, Bu-Bae Park, Ji-Hee Park, Bong-Ki Shin, Dong-Hyun Kim, Se-Hun Kim, Hwan-Hee Cho
  • Pre-S protein of hepatitis B virus (HBV) as an adjuvant and a component of HBV vaccine
    Publication number: 20040137016
    Abstract: The present invention relates to an adjuvant and vaccine composition containing pre-S of the hepatitis B virus, and more specifically to a modified recombinant pre-S that can enhance immunogenicity of a general vaccine antigen. The present invention also relates to an improved prophylactic Hepatitis B virus (HBV) vaccine and a therapeutic vaccine for the treatment of chronic HBV carriers.
    Type: Application
    Filed: November 24, 2003
    Publication date: July 15, 2004
    Inventors: Hong-Mo Moon, Ki-Yong Kim, Jung-Sun Yum, Byung-Cheol Ahn, Su-Young Yi, Young Seomun, Ji-Hee Park