Granted Patent
Utility
US 6,670,111 · App. 10/236,622
Photographic dispersions for yellow filter dyes
Inventors:
Corrado Balestra, Mauro Besio, Emilio Prosperi
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Sep 5, 2002
Inventors
Corrado Balestra
Mauro Besio
Emilio Prosperi
Assignee (at issue)
Ferrania, S.p.A.
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.