Patents by Inventor Joon Kwang Lee

Joon Kwang Lee 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).

  • Composite negative electrode active material, method of producing the same, and negative electrode and lithium secondary battery including the same
    Patent number: 11955625
    Abstract: Provided are a negative electrode active material including a three-dimensional composite. The three-dimensional composite includes secondary particles containing a silicon carbide-based (SiCx, 0<x?1) nanosheet having a bent portion and amorphous carbon. Also provided are a method of producing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: April 9, 2024
    Assignees: SK On Co., Ltd., UNIST (Ulsan National Institute of Science and Technology)
    Inventors: Eunjun Park, Joon-Sup Kim, Jaekyung Sung, Yoon Kwang Lee, Tae Yong Lee, Jae Phil Cho
  • METHOD FOR PREPARING COMPOUND AS PI3K INHIBITOR AND INTERMEDIATE COMPOUND FOR PREPARING SAME
    Publication number: 20230295158
    Abstract: The present invention provides a method for preparing a compound as a PI3K inhibitor with reduced process steps, including a process that has a shortened reaction time in the preparation of the compound as a PI3K inhibitor, and enabling reaction in mild conditions. Accordingly, the present invention provides a method for preparing a compound as a PI3K inhibitor, which is easy in process management and industrial mass-production while achieving process simplification, compared to existing known preparation methods.
    Type: Application
    Filed: June 29, 2021
    Publication date: September 21, 2023
    Inventors: Yong Ho SUN, Ok Kyoung CHOI, Joon Kwang LEE, Ji Han KIM
  • AMORPHOUS PI3K INHIBITOR AND PHARMACEUTICAL COMPOSITION COMPRISING SAME
    Publication number: 20220227759
    Abstract: The present invention relates to an amorphous PI3K inhibitor and a pharmaceutical composition comprising same. According to the present invention, a novel amorphous PI3K inhibitor having improved solubility and bioavailability and excellent stability and a pharmaceutical composition comprising same can be provided.
    Type: Application
    Filed: May 8, 2020
    Publication date: July 21, 2022
    Inventors: Seong Heon KIM, Joon Kwang LEE, Yong Ho SUN, Ji Han KIM
  • CRYSTAL POLYMORPHISM OF PI3K INHIBITOR AND METHOD FOR PREPARING SAME
    Publication number: 20220204502
    Abstract: The present invention relates to a novel crystal polymorphism of a P13K inhibitor, and a method for preparing same. The novel crystal form of the present invention has remarkably superior non-hygroscopicity, can exhibit a superior pharmacological effect due to high blood levels, and exhibits high bioavailability, and thus is suitable for pharmaceutical formulations.
    Type: Application
    Filed: May 8, 2020
    Publication date: June 30, 2022
    Inventors: Seong Heon KIM, Joon Kwang LEE, Yong Ho SUN, Ji Han KIM
  • Compound having angiogenesis inhibitory activity, method for preparing same, and pharmaceutical composition comprising same
    Patent number: 9227955
    Abstract: Disclosed are an anti-angiogenic compound, represented by Chemical Formula I, or a pharmaceutically acceptable salt thereof, a preparation method thereof, and a pharmaceutically acceptable composition including the same. Because the compound of Chemical Formula I potently suppresses the angiogenesis, the compound of Chemical Formula I is applicable to the prevention and treatment of diseases caused by aberrant activity of vascular endothelial growth factor, and available as an anti-angiogenic agent.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: January 5, 2016
    Assignee: Boryung Pharmaceutical Co., Ltd.
    Inventors: Ji Han Kim, Je Hak Kim, Joon Kwang Lee, Hahn-Sun Jung, Nam Seok Han, Yong Park, Seung-Hoon Kang, Hee Jin Jeong, Kyung-Tae Lee, Hye Eun Choi, Yong Ha Chi, Joo Han Lee, Soo Heui Paik
  • Novel Compound Having Angiogenesis Inhibitory Activity, Method for Preparing Same, and Pharmaceutical Composition Comprising Same
    Publication number: 20140256711
    Abstract: Disclosed are an anti-angiogenic compound, represented by Chemical Formula I, or a pharmaceutically acceptable salt thereof, a preparation method thereof, and a pharmaceutically acceptable composition including the same. Because the compound of Chemical Formula I potently suppresses the angiogenesis, the compound of Chemical Formula I is applicable to the prevention and treatment of diseases caused by aberrant activity of vascular endothelial growth factor, and available as an anti-angiogenic agent.
    Type: Application
    Filed: July 27, 2012
    Publication date: September 11, 2014
    Applicant: Boryung Pharmaceutical Co., Ltd.
    Inventors: Ji Han Kim, Je Hak Kim, Joon Kwang Lee, Hahn-Sun Jung, Nam Seok Han, Yong Park, Seung-Hoon Kang, Hee Jin Jeong, Kyung-Tae Lee, Hye Eun Choi, Yong Ha Chi, Joo Han Lee, Soo Heui Paik