Granted Patent
Utility
US 4,221,864 · App. 06/034,689
Light-sensitive silver halide photographic materials
Inventors:
Tateshi Iytaka, Syunji Matsuo, Toshio Nagatani, Kazuo Takahashi, Takeshi Habu
Patented Case
View Patent ↗
Granted: Sep 9, 1980
Filed: Apr 30, 1979
Inventors
Tateshi Iytaka
Syunji Matsuo
Toshio Nagatani
Kazuo Takahashi
Takeshi Habu
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.