Granted Patent
Utility
US 4,252,893 · App. 06/029,028
Light-sensitive silver halide photographic material
Inventors:
Masao Iwamuro, Kenichiro Okaniwa, Takashi Sasaki, Shizuo Saito, Eiichi Sakamoto
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: Apr 11, 1979
Inventors
Masao Iwamuro
Kenichiro Okaniwa
Takashi Sasaki
Shizuo Saito
Eiichi Sakamoto
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.