Patents by Inventor Jae S. Ryu

Jae S. 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).

  • Heat-sensitive recording material
    Patent number: 5179067
    Abstract: The present invention relates to a color forming solution including the benzoin derivatives as a sensitizer.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: January 12, 1993
    Assignee: Chonju Paper Mfg. Co., Ltd.
    Inventors: Suk K. Chang, Dong J. Yang, Kyu C. Paik, Don W. Kim, Jae S. Ryu