Granted Patent
Utility
US 6,494,565 · App. 09/434,981
Methods and apparatuses for operating a variable impedance acoustic ink printhead
Inventors:
Richard N. Ellson, Robert P. Kowalski, Babur B. Hadimioglu, Thanh D. Truong
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Nov 5, 1999
Inventors
Richard N. Ellson
Robert P. Kowalski
Babur B. Hadimioglu
Thanh D. Truong
Assignee (at issue)
Xerox Corporation
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.