Granted Patent
Utility
US 6,213,596 · App. 09/451,334
Method and apparatus for reducing entrained air in ink for ink jet cartridges used in ink jet printers
Inventors:
Ronald M. Nowell, Jr., Julie Ann Gordon Whitney
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Nov 30, 1999
Inventors
Ronald M. Nowell, Jr.
Julie Ann Gordon Whitney
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.