Patents by Inventor Keiko Chigusa

Keiko Chigusa 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).

  • Photothermographic material
    Patent number: 6475710
    Abstract: A photothermographic material is disclosed, comprising a light-sensitive silver halide, an organic silver salt, a reducing agent, a thiuronium salt and a binder, wherein the photothermographic material further contains at least one of compounds represented by formulas such as
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: November 5, 2002
    Assignee: Konica Corporation
    Inventors: Shinji Kudo, Keiko Chigusa, Hiroshi Kashiwagi
  • Photothermographic material
    Publication number: 20010031430
    Abstract: A photothermographic material is disclose, comprising a light-sensitive silver halide, an organic silver salt, a reducing agent, a thiuronium salt and a binder, wherein the photothermographic material further contains at least one of compounds represented by formulas such as 1
    Type: Application
    Filed: January 17, 2001
    Publication date: October 18, 2001
    Inventors: Shinji Kudo, Keiko Chigusa, Hiroshi Kashiwagi