Patents by Inventor Mitsuhiko Uno

Mitsuhiko Uno 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).

  • Concentrated color developer composition for silver halide photographic light-sensitive materials
    Patent number: 5260185
    Abstract: A concentrated composition of color developer for silver halide color photographic light-sensitive material is disclosed. The composition is excellent in stability during storage for a long period. The composition comprises a specified hydroxyamine derivative and a specific chelating agent. The composition preferably has a pH value of not lower than 10.6.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: November 9, 1993
    Assignee: Konica Corporation
    Inventors: Naoki Takabayashi, Mitsuhiko Uno, Masaaki Furuya