Granted Patent
Utility
US 4,521,507 · App. 06/453,475
Multi-layer light-sensitive silver halide color photographic material
Inventors:
Toshifumi Iijima, Kiyoshi Yamashita
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Dec 27, 1982
Inventors
Toshifumi Iijima
Kiyoshi Yamashita
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.