Granted Patent
Utility
US 6,814,433 · App. 10/170,479
Base aperture in ink jet cartridge with irregular edges for breaking surface tension of the ink
Inventors:
William A. Putman, Stephen A. Anderson
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Jun 13, 2002
Inventors
William A. Putman
Stephen A. Anderson
Assignee (at issue)
Nu-kote 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.