Granted Patent
Utility
US 5,273,573 · App. 07/929,733
Specific dye set for thermal ink-jet printing on paper
Inventor:
William D. Kappele
Patented Case
View Patent ↗
Granted: Dec 28, 1993
Filed: Aug 13, 1992
Inventor
William D. Kappele
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.