Patents by Inventor Ji Woong Ryu

Ji Woong Ryu 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).

  • Publication number: 20250091879
    Abstract: The present invention relates to: a method for preparing a non-oxidized carbon nanotube dispersion through mechanical impregnation so as to apply carbon nanotubes having a hydrophobic surface and a bundle shape as a high-performance conductive material of a negative electrode or a positive electrode for a secondary battery through solvent dispersion without acid treatment; and a non-oxidized carbon nanotube dispersion for a conductive material of a secondary battery, prepared by the method.
    Type: Application
    Filed: November 5, 2024
    Publication date: March 20, 2025
    Inventors: Seung Yol JEONG, Byeong Guk KIM, Ick Jun KIM, Sun Hye YANG, Geon Woong LEE, Hye Jung LEE, Soo Yeon JEONG, Jung Mo KIM, Ji Hyeon RYU, Hee Jin JEONG
  • Publication number: 20250073138
    Abstract: The present invention relates to a lipid-based nanoparticle composition for enhancing transdermal absorption and a method of preparing the same. The present invention provides a carrier for enhancing transdermal absorption that enhances or promotes chemical bonding with skin tissue by modifying the surface of lipid nanoparticles with a polyphenol. This may demonstrate the synergistic effect of active and passive transdermal delivery systems.
    Type: Application
    Filed: July 19, 2024
    Publication date: March 6, 2025
    Inventors: Ji Soo Ryu, Jae Yong Seo, Hang Eui Cho, Hyun Dae Cho, Jin Woong Kim, Minha Jeon, Seulgi Kim, Se Eun Kim
  • Patent number: 7259720
    Abstract: The present invention relates to an internal antenna for a mobile handset comprising: a feeding pin for power supply; an upper radiating patch connected to the feeding pin, having a first upper patch portion and a second upper patch portion, which receive power supply from the feeding pin and resonate at different frequency bands respectively; a side radiating patch receiving power supply from the feeding pin, extended along the side of the upper radiating patch and vertically apart from the upper radiating patch by certain distance; and a short pin, one end of which is in contact with the upper radiating patch and the side radiating patch and the other end of which is grounded. According to the present invention, a bandwidth to be used can be broadened without increasing space for a general small size dual band Planar Inverted F Antenna PIFA.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: August 21, 2007
    Assignee: Pantech Co., Ltd
    Inventor: Ji Woong Ryu
  • Patent number: 6995717
    Abstract: The present invention relates to an internal antenna for a mobile handset comprising: a feeding pin for power supply; an upper radiating patch connected to the feeding pin, having a first upper patch portion and a second upper patch portion, which receive power supply from the feeding pin and resonate at different frequency bands respectively; a side radiating patch receiving power supply from the feeding pin, extended along the side of the upper radiating patch and vertically apart from the upper radiating patch by certain distance; and a short pin, one end of which is in contact with the upper radiating patch and the side radiating patch and the other end of which is grounded. According to the present invention, a bandwidth to be used can be broadened without increasing space for a general small size dual band Planar Inverted F Antenna PIFA.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: February 7, 2006
    Assignee: Pantech Co., Ltd.
    Inventor: Ji Woong Ryu