Granted Patent
Utility
US 6,648,448 · App. 09/570,607
Waste ink management system for an ink jet printer
Inventors:
Nai-Hsiung Ma, Shirley Mitchell, Tasha Monique Sims, Patrick Lawrence Ransom
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: May 12, 2000
Inventors
Nai-Hsiung Ma
Shirley Mitchell
Tasha Monique Sims
Patrick Lawrence Ransom
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.