Granted Patent
Utility
US 4,446,228 · App. 06/372,128
Silver halide photographic material
Inventors:
Chika Honda, Masatoshi Iwata, Takeo Koitabashi
Patented Case
View Patent ↗
Granted: May 1, 1984
Filed: Apr 27, 1982
Inventors
Chika Honda
Masatoshi Iwata
Takeo Koitabashi
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.