Granted Patent
Utility
US 4,746,600 · App. 06/879,147
Light-sensitive silver halide color photographic material with non-diffusable light-insensitive dye layer
Inventors:
Yoshikazu Watanabe, Hiroshi Shimazaki, Toshifumi Iijima, Yoshiro Shigetomi, Toshihiko Yagi
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Jun 26, 1986
Inventors
Yoshikazu Watanabe
Hiroshi Shimazaki
Toshifumi Iijima
Yoshiro Shigetomi
Toshihiko Yagi
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.