Granted Patent
Utility
US 4,416,979 · App. 06/375,545
Photographic light-sensitive element with nitrophyenylazo metal complexable dye
Inventors:
Jiro Takahashi, Tawara Komamura, Ryuichiro Kobayashi
Patented Case
View Patent ↗
Granted: Nov 22, 1983
Filed: May 6, 1982
Inventors
Jiro Takahashi
Tawara Komamura
Ryuichiro Kobayashi
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.