Patents by Inventor Tamotsu Kozima

Tamotsu Kozima 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).

  • Process for forming a photographic magenta dye image
    Patent number: 4191574
    Abstract: A process for forming a photographic magenta dye image is disclosed which requires contacting exposed silver halide with a color developing agent in the presence of a particular class of 2-equivalent magenta couplers.
    Type: Grant
    Filed: August 2, 1978
    Date of Patent: March 4, 1980
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Takaya Endo, Shui Sato, Shoji Kikuchi, Tamotsu Kozima, Tugumoto Usui, Hiroyuki Imamura, Koichi Takabe
  • Process for forming a photographic magenta dye image
    Patent number: 4126462
    Abstract: The present invention relates to a process for forming photographic images using a 2-equivalent magenta coupler position a radical of the following general formula:--O--SO.sub.2 --Rwhere R is an aliphatic hydrocarbon, aromatic hydrocarbon or heterocyclic residue.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: November 21, 1978
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Takaya Endo, Shui Sato, Shoji Kikuchi, Tamotsu Kozima, Tugumoto Usui, Hiroyuki Imamura, Koichi Takabe