Granted Patent
Utility
US 5,481,285 · App. 08/232,695
Ink jet printhead manufactured by a film coated passivation process
Inventors:
John R. Pies, Donald J. Hayes
Patented Case
View Patent ↗
Granted: Jan 2, 1996
Filed: Apr 25, 1994
Inventors
John R. Pies
Donald J. Hayes
Assignee (at issue)
Compaq Computer Corporation
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.