Patents by Inventor Sadatosi Kobayasi

Sadatosi Kobayasi 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).

  • Method for developing an exposed silver halide color photosensitive material
    Patent number: 4028106
    Abstract: An improved method for developing an exposed silver halide color photosensitive material is disclosed which comprises conducting the development in the presence of a cyan coupler. The coupler has, in the active position thereof, the following split-off group: ##STR1## WHEREIN R.sub.1 is an aliphatic hydrocarbon residue, an aromatic hydrocarbon residue, or a heterocyclic ring residue; R.sub.2 is an aliphatic hydrocarbon residue or an aromatic hydrocarbon residue; l is an integer of 0 to 4 inclusive.
    Type: Grant
    Filed: November 4, 1975
    Date of Patent: June 7, 1977
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Haruo Hori, Shoji Kikuchi, Hajime Wada, Sadatosi Kobayasi, Takaya Endo