Patents by Inventor Ruyzi Otomo

Ruyzi Otomo 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).

  • Patent number: 4876180
    Abstract: A method of processing a silver halide-containing photosenstitive material for color photography includes the silver-removing step in which silver which is formed by reduction in the color developing step is oxidized by a bleaching agent and further changed into a soluble silver complex by the action of a fixing agent. In this process, bleaching is carried out in both a bleaching bath and a bleach-fixing bath, and fixing is effected in the bleach-fixing bath. In the bleach-fixing bath, a stream of bleach-fixing solution is brought into contact with the emulsion coating surface of the color photosensitive material at a higher flow velocity than that of a stream of bleach-fixing solution which is circulated in the bath.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: October 24, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Junya Nakajima, Haruo Takase, Kazushige Uenaka, Ruyzi Otomo
  • Patent number: 4857441
    Abstract: A method of processing a silver halide-containing photosensitive material for color photography includes the silver-removing step in which silver which is formed by reduction in the color developing step is oxidized by a bleaching agent and further changed into a soluble silver complex by the action of a fixing agent. In this process, bleaching is carried out in both a bleaching bath and a bleach-fixing bath, and fixing is effected in the bleach-fixing bath. In the bleach-fixing bath, a stream of bleach-fixing solution is brought into contact with the emulsion coating surface of the color photosensitive material at a higher flow velocity than that of a stream of bleach-fixing solution which is circulated in the bath.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: August 15, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Junya Nakajima, Haruo Takase, Kazushige Uenaka, Ruyzi Otomo