Granted Patent
Utility
US 4,922,265 · App. 07/357,915
Ink jet printhead with self-aligned orifice plate and method of manufacture
Inventor:
Alfred I-Tsung Pan
Patented Case
View Patent ↗
Granted: May 1, 1990
Filed: May 30, 1989
Inventor
Alfred I-Tsung Pan
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.