Patents by Inventor Tung-Gul An

Tung-Gul An 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).

  • Aqueous ink composition with metallic glittering
    Patent number: 6544323
    Abstract: The present invention relates to an aqueous ink composition with metallic glittering, more particularly to an aqueous ink composition with metallic glittering having an excellent glittering appearance, three-dimensional effect, writing aptitude comprising a metal-coating resin component, colorant, water-soluble resin, water-soluble organic solvent, and water.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: April 8, 2003
    Assignee: Dang-A Pencil Co., Ltd.
    Inventor: Tung-Gul An
  • Aqueous ink composition with metallic glittering
    Publication number: 20020148387
    Abstract: The present invention relates to an aqueous ink composition with metallic glittering, more particularly to an aqueous ink composition with metallic glittering having an excellent glittering appearance, three-dimensional effect, writing aptitude comprising a metal-coating resin component, colorant, water-soluble resin, water-soluble organic solvent, and water.
    Type: Application
    Filed: June 13, 2001
    Publication date: October 17, 2002
    Applicant: Dang-A Pencil Co. Ltd.
    Inventor: Tung-Gul An