Granted Patent
Utility
US 6,776,473 · App. 10/320,763
Method of mixing multi-level black and color inks in a printing system
Inventors:
Xuan-Chao Huang, Brant Dennis Nystrom, Richard Lee Reel
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Dec 16, 2002
Inventors
Xuan-Chao Huang
Brant Dennis Nystrom
Richard Lee Reel
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.