Granted Patent
Utility
US 4,421,846 · App. 06/333,901
Photographic element with reducible metal complex that releases photographically useful compound
Inventors:
Satoru Ikeuchi, Masaru Kanbe, Jiro Takahashi, Ryuichiro Kobayashi, Shunji Suginaka, Noboru Mizukura
Patented Case
View Patent ↗
Granted: Dec 20, 1983
Filed: Dec 23, 1981
Inventors
Satoru Ikeuchi
Masaru Kanbe
Jiro Takahashi
Ryuichiro Kobayashi
Shunji Suginaka
Noboru Mizukura
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.