Granted Patent
Utility
US 5,745,140 · App. 08/626,432
Color ink-jet printer with pigment black and dye-based color inks
Inventors:
John L. Stoffel, Keshava A. Prasad, Ronald A. Askeland, Michele Shepard, Frank Drogo, Leonard Slevin, Mark S. Hickman, Clayton L. Holstun
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: Apr 2, 1996
Inventors
John L. Stoffel
Keshava A. Prasad
Ronald A. Askeland
Michele Shepard
Frank Drogo
Leonard Slevin
Mark S. Hickman
Clayton L. Holstun
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.