Granted Patent
Utility
US 4,247,628 · App. 06/109,273
Color photographic material improved in fading properties
Inventors:
Takashi Uchida, Shoji Kikuchi, Takashi Sasaki, Mikio Sato
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: Jan 3, 1980
Inventors
Takashi Uchida
Shoji Kikuchi
Takashi Sasaki
Mikio Sato
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.