Patents by Inventor Joon Pyun

Joon Pyun 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 composition containing styrene-butadiene-styrene block copolymer having asymmetric polystyrene block
    Publication number: 20060241218
    Abstract: The present invention provides a modified asphalt composition showing excellent ductility and thermal stability at low temperature and the resistance to permanent deformation at high temperature comprising i) 100 wt. part of natural asphalt; and ii) 0.5˜40 wt. part of asymmetric styrene-butadiene-styrene triblock copolymer having number average molecular weight of 20,000˜1,000,000. Modified asphalt composition of present invention can be used for pavement of road or manufacturing water proof sheet.
    Type: Application
    Filed: August 30, 2005
    Publication date: October 26, 2006
    Inventors: Sam Min Kim, Young Kim, Seung Kim, Joon Pyun