Granted Patent
Utility
US 6,781,720 · App. 09/451,993
Gradient-based trapping using patterned trap zones
Inventor:
R. Victor Klassen
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Nov 30, 1999
Inventor
R. Victor Klassen
Assignee (at issue)
Xerox Corporation
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.