Granted Patent
Utility
US 6,710,778 · App. 09/781,843
Method for halftoning using a difference weighting function
Inventor:
Brian Edward Cooper
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Feb 12, 2001
Inventor
Brian Edward Cooper
Assignee (at issue)
Lexmark International, Inc.
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.