Granted Patent
Utility
US 4,563,405 · App. 06/620,459
Processing solution having bleaching ability for light-sensitive silver halide color photographic material
Inventors:
Masao Ishikawa, Kazuhiro Kobayashi, Shigeharu Koboshi
Patented Case
View Patent ↗
Granted: Jan 7, 1986
Filed: Jun 14, 1984
Inventors
Masao Ishikawa
Kazuhiro Kobayashi
Shigeharu Koboshi
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.