Patents by Inventor Dong hyeok Hwang

Dong hyeok Hwang 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).

  • Patent number: 11981939
    Abstract: Provided are an enzyme complex for decomposing polyethylene terephthalate (PET), a method for decomposing waste plastic using the enzyme complex, and a manufacturing method of the enzyme complex. According to the present disclosure, since the enzyme complex is a complex form of Ideonella sakaiensis-derived PETase and Candida Antarctica-derived lipase (CALB) by dockerin-cohesin binding and is simultaneously applicable to a substrate to be decomposed, it is possible to exhibit a synergistic effect on the decomposition of polyethylene terephthalate. In addition, it is possible to provide a stable enzyme complex of decomposing polyethylene terephthalate by providing a mini-scaffolding protein obtained by miniaturizing cellulosome as a scaffolding protein.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: May 14, 2024
    Assignee: Korea University Research and Business Foundation
    Inventors: Sung Ok Han, Dong Hyeok Hwang
  • Publication number: 20230111846
    Abstract: Provided are an enzyme complex for decomposing polyethylene terephthalate (PET), a method for decomposing waste plastic using the enzyme complex, and a manufacturing method of the enzyme complex. According to the present disclosure, since the enzyme complex is a complex form of Ideonella sakaiensis-derived PETase and Candida Antarctica-derived lipase (CALB) by dockerin-cohesin binding and is simultaneously applicable to a substrate to be decomposed, it is possible to exhibit a synergistic effect on the decomposition of polyethylene terephthalate. In addition, it is possible to provide a stable enzyme complex of decomposing polyethylene terephthalate by providing a mini-scaffolding protein obtained by miniaturizing cellulosome as a scaffolding protein.
    Type: Application
    Filed: September 20, 2022
    Publication date: April 13, 2023
    Applicant: Korea University Research and Business Foundation
    Inventors: Sung Ok HAN, Dong Hyeok HWANG
  • Patent number: 8549580
    Abstract: A method and apparatus for providing software security is provided. In the software security method, an installation file of software that includes at least one execution file and at least one data file which are stored in a user terminal is executed. Accordingly, at least one virtual execution file corresponding to the at least one execution file and at least one virtual data file corresponding to the at least one data file are installed in a user area of the user terminal, and the at least one execution file, the at least one data file, and a controller for controlling the at least one virtual execution file and the at least one execution file are installed in a security area of the user terminal.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: October 1, 2013
    Assignee: Teruten, Inc.
    Inventors: Dong hyeok Hwang, Seok gu Yun
  • Publication number: 20110162041
    Abstract: A method and apparatus for providing software security is provided. In the software security method, an installation file of software that includes at least one execution file and at least one data file which are stored in a user terminal is executed. Accordingly, at least one virtual execution file corresponding to the at least one execution file and at least one virtual data file corresponding to the at least one data file are installed in a user area of the user terminal, and the at least one execution file, the at least one data file, and a controller for controlling the at least one virtual execution file and the at least one execution file are installed in a security area of the user terminal.
    Type: Application
    Filed: June 25, 2008
    Publication date: June 30, 2011
    Applicant: TERUTEN, INC.
    Inventors: Dong hyeok Hwang, Seok gu Yun