Patents by Inventor Jun-hwan Ahn

Jun-hwan Ahn 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).

  • Publication number: 20240291035
    Abstract: The present disclosure relates to an electrolyte for a lithium-sulfur battery comprising: a base electrolyte comprising a lithium salt and an organic solvent; and an electrolyte additive, wherein the electrolyte additive comprises an isocyanate functional group (—N?C?O).
    Type: Application
    Filed: June 2, 2022
    Publication date: August 29, 2024
    Inventors: Dong-Won KIM, Da-Ae LIM, Jun-Hwan AHN, Tae-Sun YOU, Ji-Wan KIM
  • Publication number: 20040034186
    Abstract: The present invention relates to a novel initiator for polymerizing polyisocyanate, more particularly to a metal amidate represented by the following Formula 1, which is useful for polymerizing polyisocyanate having a variety of functional groups, including alkyl and aryl, by anionic living polymerization.
    Type: Application
    Filed: August 15, 2003
    Publication date: February 19, 2004
    Applicant: KWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY.
    Inventors: Jae-Suk Lee, Jun-Hwan Ahn
  • Patent number: 6686066
    Abstract: A light-emitting compound and a display device adopting the light-emitting compounds as a color-developing substance. When the display device adopts an organic layer formed of the light-emitting compound, such as a light-emitting layer or an electron transport layer, as a blue light-emitting material, it can display blue and has good luminous efficiency and driving voltage characteristics.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: February 3, 2004
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Soon-ki Kwon, Yun-hi Kim, Dong-cheol Shin, Jun-hwan Ahn, Han-sung Yu, Jung-hyun Lee
  • Patent number: 6660821
    Abstract: The present invention relates to vinyl-phenyl monomers and polymers prepared therefrom. More particularly, the present invention is to provide the vinyl-phenyl monomers expressed by formula (1) which are capable of various polymerization such as radical polymerization, cation polymerization, anion polymerization and metallocene catalyzed polymerization due to resonance effect of phenyl group and changing characteristics variously and thus, suitable in the synthesis of general-purpose polymers which can be used in photo-functional materials by forming a complex with a metal component having an optical characteristic.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: December 9, 2003
    Assignee: Kwangju Institute of Science and Technology
    Inventors: Jae-Suk Lee, Jun-Hwan Ahn, Young-Sun Cho, Nam-Goo Kang, Hye-Kyong Lee
  • Publication number: 20030176709
    Abstract: The present invention relates to vinyl-phenyl monomers and polymers prepared therefrom. More particularly, the present invention is to provide the vinyl-phenyl monomers expressed by formula (1) which are capable of various polymerization such as radical polymerization, cation polymerization, anion polymerization and metallocene catalyzed polymerization due to resonance effect of phenyl group and changing characteristics variously and thus, suitable in the synthesis of general-purpose polymers which can be used in photo-functional materials by forming a complex with a metal component having an optical characteristic.
    Type: Application
    Filed: February 14, 2003
    Publication date: September 18, 2003
    Applicant: Kwangju Institute of Science and Technology
    Inventors: Jae-Suk Lee, Jun-Hwan Ahn, Young-Sun Cho, Nam-Goo Kang, Hye-Kyong Lee
  • Publication number: 20030099864
    Abstract: A light-emitting compound and a display device adopting the light-emitting compounds as a color-developing substance. When the display device adopts an organic layer formed of the light-emitting compound, such as a light-emitting layer or an electron transport layer, as a blue light-emitting material, it can display blue and has good luminous efficiency and driving voltage characteristics.
    Type: Application
    Filed: November 7, 2002
    Publication date: May 29, 2003
    Applicant: Samsung Display Devices Co., Ltd.
    Inventors: Soon-Ki Kwon, Yun-Hi Kim, Dong-Cheol Shin, Jun-Hwan Ahn, Han-Sung Yu, Jung-Hyun Lee
  • Patent number: 6545159
    Abstract: The present invention relates to vinyl-phenyl monomers and polymers prepared therefrom.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: April 8, 2003
    Assignee: Kwangju Institute of Science and Technology
    Inventors: Jae-Suk Lee, Jun-Hwan Ahn, Young-Sun Cho, Nam-Goo Kang, Hye-Kyong Lee
  • Patent number: 6506504
    Abstract: A light-emitting compound and a display device adopting the light-emitting compounds as a color-developing substance. When the display device adopts an organic layer formed of the light-emitting compound, such as a light-emitting layer or an electron transport layer, as a blue light-emitting material, it can display blue and has good luminous efficiency and driving voltage characteristics.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: January 14, 2003
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Soon-ki Kwon, Yun-hi Kim, Dong-cheol Shin, Jun-hwan Ahn, Han-sung Yu, Jung-hyun Lee
  • Publication number: 20020198346
    Abstract: The present invention relates to vinyl-phenyl monomers and polymers prepared therefrom. More particularly, the present invention is to provide the vinyl-phenyl monomers expressed by formula (1) which are capable of various polymerization such as radical polymerization, cation polymerization, anion polymerization and metallocene catalyzed polymerization due to resonance effect of phenyl group and changing characteristics variously and thus, suitable in the synthesis of general-purpose polymers which can be used in photo-functional materials by forming a complex with a metal component having an optical characteristic.
    Type: Application
    Filed: August 10, 2001
    Publication date: December 26, 2002
    Applicant: KWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jae-Suk Lee, Jun-Hwan Ahn, Young-Sun Cho, Nam-Goo Kang, Hye-Kyong Lee
  • Publication number: 20020165333
    Abstract: The present invention relates to polyisocyanates having various functional groups and a preparing method thereof. More particularly, the present invention is to prepare polyisocyantes by living anion polymerization under suitable temperature and pressure enough to protect metal ions to prevent from the formation of trimer of the isocyanate through depolymerization and thus provide polyisocyanates having alkyl, silyl, siloxane and carbamate groups with desirable molecular weight, molecular weight distribution and improved physical properties.
    Type: Application
    Filed: April 13, 2001
    Publication date: November 7, 2002
    Inventors: Jae-Suk Lee, Jun-Hwan Ahn, Yeong-Deuk Shin
  • Patent number: 6337150
    Abstract: A light-emitting compound and a display device adopting the light-emitting compound as a color-developing substance. When the display device adopts an organic layer formed of such light-emitting compound as a blue light-emitting material, luminous efficiency of the display device is improved.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: January 8, 2002
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Soon-ki Kwon, Yun-hi Kim, Dong-cheol Shin, Jun-hwan Ahn, Han-sung Yu, Sung-hyun Cho