Granted Patent
Utility
US 5,476,604 · App. 08/180,750
Charge injection barrier for positive charging organic photoconductor
Inventor:
Khe C. Nguyen
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Jan 12, 1994
Inventor
Khe C. Nguyen
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.