Patents by Inventor Yuriko Kishi

Yuriko Kishi 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).

  • Ink jet recording method
    Patent number: 4620197
    Abstract: By allowing at least the surface of an ink jet recording sheet to contain a cationic fluorescent agent, the waterproofness of water-soluble dyes in inks as well as the brightness of the recording sheet can be enhanced and thereby multicolor images of excellent color reproducibility can be formed on the sheet.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: October 28, 1986
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Shigehiko Miyamoto, Yoshinobu Watanabe, Yuriko Kishi