Patents by Inventor Chung Ha Choi

Chung Ha Choi 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).

  • Arylsulfonylimidazolone derivatives as an antitumor agent
    Patent number: 5932742
    Abstract: The present invention relates to a novel arylsulfonylimidazolone derivative represented by the following formula (I) which shows a superior antineoplastic activity in contrast to the known sulfonylurea antitumor agents as well as little side effect: ##STR1## and its pharmaceutically acceptable salt and stereoisomer, in which - -, R.sub.1, and R.sub.2 are as defined in the specification.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: August 3, 1999
    Assignee: Dong Wha Pharm. Ind. Co., Ltd.
    Inventors: Sung June Yoon, Yong Ho Chung, Moon Sun Lee, Dong Rack Choi, Jung A Lee, Hee Soon Lee, Hae Ran Yun, Dug Keun Lee, Eun Yi Moon, Hyun Sook Hwang, Chung Ha Choi, Sang Hun Jung
  • Arylsulfonylimidazolone derivatives as an antitumor agent
    Patent number: 5929103
    Abstract: The present invention relates to a novel arylsulfonylimidazolone derivative represented by the following formula (I) which shows a superior antineoplastic activity in contrast to the known sulfonylurea antitumor agents as well as little side effect: ##STR1## and its pharmaceutically acceptable salt and stereoisomer, in which ----, R.sub.1, and R.sub.2 are as defined in the specification.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: July 27, 1999
    Assignee: Dong Wha Pharm. Ind. Co., Ltd.
    Inventors: Sung June Yoon, Yong Ho Chung, Moon Sun Lee, Dong Rack Choi, Jung A Lee, Hee Soon Lee, Hae Ran Yun, Dug Keun Lee, Eun Yi Moon, Hyun Sook Hwang, Chung Ha Choi, Sang Hun Jung
  • Electronic device
    Patent number: D1016029
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: February 27, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-Young Lee, Hyok-Su Choi, Chung-Ha Kim, Jong-Bo Jung, Min-Young Park
  • Electronic device
    Patent number: D1016030
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: February 27, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-Young Lee, Hyok-Su Choi, Chung-Ha Kim, Jong-Bo Jung, Min-Young Park
  • Electronic device
    Patent number: D1016775
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: March 5, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-Young Lee, Hyok-Su Choi, Chung-Ha Kim, Jong-Bo Jung, Min-Young Park