Granted Patent
Utility
US 4,535,343 · App. 06/547,700
Thermal ink jet printhead with self-passivating elements
Inventors:
Conrad L. Wright, James G. Bearrs, C. S. Chan, Robert R. Hay, Frank Ura
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Oct 31, 1983
Inventors
Conrad L. Wright
James G. Bearrs
C. S. Chan
Robert R. Hay
Frank Ura
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.