Granted Patent
Utility
US 5,112,399 · App. 07/649,123
Plain paper inks
Inventors:
Leonard Slevin, Mark S. Hickman
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Jan 28, 1991
Inventors
Leonard Slevin
Mark S. Hickman
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.