Granted Patent
Utility
US 5,124,723 · App. 07/734,013
Light-stabilized ink composition
Inventor:
Hugh Stephen Laver
Patented Case
View Patent ↗
Granted: Jun 23, 1992
Filed: Jul 19, 1991
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.