Patents by Inventor Soung-min Ryu

Soung-min 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).

  • Functional additive having UV-absorbing substituent and ink composition containing the same
    Patent number: 7223355
    Abstract: A 2-methoxyphenol derivative and an ink composition containing the 2-methoxyphenol derivative, an aqueous medium, and a colorant enhance light resistance by absorbing ultraviolet (UV) light, provide wettability and stabilize a colorant. The ink composition prepared using the 2-methoxyphenol derivative also has improved light resistance, wettability and stabilizes a colorant and does not require an additional light-resistant agent.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: May 29, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeon-kyoung Jung, Soung-min Ryu