Granted Patent
Utility
US 4,356,258 · App. 06/209,030
Silver halide color photographic material containing yellow coupler
Inventors:
Tugumoto Usui, Katsunori Kato, Tamotsu Kojima
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Nov 21, 1980
Inventors
Tugumoto Usui
Katsunori Kato
Tamotsu Kojima
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.