Granted Patent
Utility
US 4,554,247 · App. 06/579,765
Silver halide photographic material
Inventors:
Kiyotoshi Yamashita, Minoru Ishikawa, Hideo Ohta, Kenji Kumashiro
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Feb 13, 1984
Inventors
Kiyotoshi Yamashita
Minoru Ishikawa
Hideo Ohta
Kenji Kumashiro
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.