Granted Patent
Utility
US 6,761,440 · App. 10/175,404
Ink cartridge with negative-pressure regulating mechanism
Inventors:
Chin-Te Chou, Chuang-Hsien Chiu
Patented Case
View Patent ↗
Granted: Jul 13, 2004
Filed: Jun 20, 2002
Inventors
Chin-Te Chou
Chuang-Hsien Chiu
Assignee (at issue)
Nanodynamics, 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.