Patents by Inventor Seigi Ichijima

Seigi Ichijima 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).

  • Silver halide color photographic material
    Patent number: 4500634
    Abstract: A silver halide color photographic material in which both a coupler capable of releasing a diffusible development restrainer by coupling and a polymer coupler latex are present to increase visual sharpness.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: February 19, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kei Sakanoue, Morio Yagihara, Seigi Ichijima, Kimitoshi Nagao