Patents by Inventor Seung-Han Choen

Seung-Han Choen 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).

  • Asphalt modifier compositions with an improved melting rate and modified asphalt prepared using the same
    Patent number: 8173725
    Abstract: The present invention relates to a pellet type SBS-asphalt master batch modifier composition comprising styrene-butadiene-styrene (SBS) block copolymer and asphalt, and modified asphalt prepared by melting and mixing the pellet type SBS-asphalt master batch modifier composition with asphalt. The modified asphalt prepared thereof has advantages that deterioration of physical properties and thermal oxidation can be prevented while productivity can be improved due to reduced melting time of modifier.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: May 8, 2012
    Assignee: Korea Kumho Petrochemical Co., Ltd.
    Inventors: Seung-Han Choen, Jun-sang Park, Sunwoo Cheen, Joonbum Pyun
  • ASPHALT MODIFIER COMPOSITIONS WITH AN IMPROVED MELTING RATE AND MODIFIED ASPHALT PREPARED USING THE SAME
    Publication number: 20100273915
    Abstract: The present invention relates to a pellet type SBS-asphalt master batch modifier composition comprising styrene-butadiene-styrene (SBS) block copolymer and asphalt, and modified asphalt prepared by melting and mixing the pellet type SBS-asphalt master batch modifier composition with asphalt. The modified asphalt prepared thereof has advantages that deterioration of physical properties and thermal oxidation can be prevented while productivity can be improved due to reduced melting time of modifier.
    Type: Application
    Filed: October 2, 2008
    Publication date: October 28, 2010
    Inventors: Seung-Han Choen, Jun-sang Park, Sunwoo Cheen, Joonbum Pyun