Granted Patent
Utility
US 6,776,476 · App. 10/693,948
Ink jet printhead chip with active and passive nozzle chamber structures
Inventor:
Kia Silverbrook
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Oct 28, 2003
Inventor
Kia Silverbrook
Assignee (at issue)
Silverbrook Research Pty Ltd
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.