Granted Patent
Utility
US 5,689,586 · App. 08/502,269
Methods to print N-tone images with multi-leveling techniques
Inventor:
Qian Lin
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Jul 13, 1995
Inventor
Qian Lin
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.