Patents by Inventor Shui Satoh

Shui Satoh 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).

  • Color photographic developing composition
    Patent number: 4113491
    Abstract: Color developers represented by the following general formula are useful as color developing agents: ##STR1## R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are defined herein.
    Type: Grant
    Filed: February 6, 1976
    Date of Patent: September 12, 1978
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hidetaka Deguchi, Shoji Kikuchi, Hajime Wada, Shui Satoh, Takaya Endo