Patents by Inventor Takashi Kamio

Takashi Kamio 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 of high sensitivity and improved granularity
    Patent number: 4701404
    Abstract: A silver halide color photographic material having blue-, green- and red-sensitive silver halide emulsion layers coated on a support is provided, each of said layers being composed of a plurality of sub-layers having different sensitivities. In said material, at least a red-sensitive silver halide emulsion sub-layer having high sensitivity is provided between a first green-sensitive silver halide emulsion sub-layer of high sensitivity and a second green-sensitive silver halide emulsion sub-layer having a lower sensitivity than said first green-sensitive sub-layer, said first green-sensitive sub-layer and/or said red-sensitive sub-layer with high sensitivity giving a maximum color density of formed dye in said material higher than 0.6 but not exceeding 1.3.
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: October 20, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toshifumi Iijima, Yoshitaka Yamada, Kenji Kumashiro, Takashi Kamio, Shinya Shimura