Granted Patent
Utility
US 5,226,957 · App. 07/853,471
Solubilization of water-insoluble dyes via microemulsions for bleedless, non-threading, high print quality inks for thermal ink-jet printers
Inventors:
Palitha Wickramanayake, John R. Moffatt
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Mar 17, 1992
Inventors
Palitha Wickramanayake
John R. Moffatt
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.