Granted Patent
Utility
US 4,917,996 · App. 07/185,081
Silver halide grains, preparation thereof and light-sensitive photographic material containing said grains
Inventors:
Syoji Matsuzaka, Hideo Akamatsu, Shu Nishiwaki, Yoshihiko Suda
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Apr 22, 1988
Inventors
Syoji Matsuzaka
Hideo Akamatsu
Shu Nishiwaki
Yoshihiko Suda
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.