Patents by Inventor Young-Kyoung Pak

Young-Kyoung Pak 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).

  • Hexa-arm polyethylene glycol and its derivatives and the methods of preparation thereof
    Patent number: 6858736
    Abstract: The present invention relates to novel hexa-arm polyethylene glycol (6-arm PEG) and its derivatives. The core of 6-arm PEG derivatives is sorbitol and the end groups can be derivatized into many different reactive functionalities that are useful in conjugating with many different targets. The present invention also provides a biodegradable polymeric hydrogel-forming composition comprising the 6-arm PEG and its derivatives, and methods of using such 6-arm PEG derivatives as surgical or biological implants or sealants.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: February 22, 2005
    Assignee: SunBio, Inc.
    Inventors: Kwang Nho, Hyun Chang-min, Jung-Hun Lee, In-Kyung Kim, Young-Kyoung Pak