Granted Patent
Utility
US 5,096,489 · App. 07/569,320
Light-stabilized ink compositions
Inventor:
Hugh Stephen Laver
Patented Case
View Patent ↗
Granted: Mar 17, 1992
Filed: Aug 17, 1990
Inventor
Hugh Stephen Laver
Assignee (at issue)
Ciba-Geigy
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.