Granted Patent
Utility
US 4,540,653 · App. 06/643,812
Method of improving the light resistance of a dye image
Inventors:
Toyoki Nishijima, Kaoru Onodera
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Aug 23, 1984
Inventors
Toyoki Nishijima
Kaoru Onodera
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.