Patents by Inventor Bong-Kuk Park

Bong-Kuk Park 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).

  • EXPANDED POLYSTYRENE PARTICLES HAVING SKIN LAYER WITH SUPERIOR MOLDABILITY, METHOD FOR PREPARING THE SAME AND EXPANDED POLYSTYRENE MOLDED ARTICLE USING THE SAME
    Publication number: 20120052127
    Abstract: Disclosed are an expanded polystyrene particle having a skin layer with superior moldability, a method for preparing the same, and an expanded polystyrene molded article using the same. Provided is an expanded polystyrene particle provided on the surface thereof with a skin layer with superior moldability wherein the skin layer contains a binder selected from the group consisting of a thermoplastic resin-based adhesive, a thermosetting resin-based adhesive, an inorganic adhesive, a protein-based adhesive and a mixture thereof, wherein the skin layer further contains methylene diphenyl diisocyanate.
    Type: Application
    Filed: April 16, 2010
    Publication date: March 1, 2012
    Applicant: POLMA CO., LTD.
    Inventors: Bong-Kuk Park, Dong-Hyun Kim
  • Expanded polystyrene bead having functional skin layer, manufacturing process thereof, and functional EPS product and manufacturing process thereof using the same
    Patent number: 7128973
    Abstract: Expanded polystyrene particles having a polyvinyl acetate resin-based functional skin layer, and a process thereof are provided. The particle includes an inner expanded polystyrene layer; and a functional skin layer. The inner expanded polystyrene layer is formed by heating and expanding an expandable polystyrene bead or pellet, and the functional skin layer is formed by coating the surface of the inner expanded polystyrene layer with a functional coating composition having 10 to 99 wt % of a vinyl acetate based polymer and 0.1 to 90 wt % of at least one functional additive.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: October 31, 2006
    Inventor: Bong-Kuk Park
  • Expanded polystyrene bead having functional skin layer, manufacturing process thereof, and functional eps product and manufacturing process thereof using the same
    Publication number: 20050266244
    Abstract: Expanded polystyrene particles having a polyvinyl acetate resin-based functional skin layer, and a process thereof are provided. The particle includes an inner expanded polystyrene layer; and a functional skin layer. The inner expanded polystyrene layer is formed by heating and expanding an expandable polystyrene bead or pellet, and the functional skin layer is formed by coating the surface of the inner expanded polystyrene layer with a functional coating composition having 10 to 99 wt % of a vinyl acetate based polymer and 0.1 to 90 wt % of at least one functional additive.
    Type: Application
    Filed: January 30, 2004
    Publication date: December 1, 2005
    Inventor: Bong-Kuk Park