Granted Patent
Utility
US 5,143,547 · App. 07/749,740
Specific dye set for thermal ink-jet printing on plain and coated papers
Inventor:
William D. Kappele
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Aug 26, 1991
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.