Granted Patent
Utility
US 6,386,670 · App. 09/772,648
Printing black and three colors from three color data
Inventors:
Xuan-Chao Huang, Brant Dennis Nystrom, Richard Lee Reel
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Jan 30, 2001
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.