Granted Patent
Utility
US 4,639,415 · App. 06/776,442
Silver halide color photographic material containing a magenta color image-forming coupler
Inventors:
Yutaka Kaneko, Toshihiko Kimura, Kenji Kadokura
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Sep 16, 1985
Inventors
Yutaka Kaneko
Toshihiko Kimura
Kenji Kadokura
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.