Granted Patent
Utility
US 5,942,900 · App. 08/767,922
Method of fault detection in ink jet printhead heater chips
Inventors:
Jan Richard DeMeerleer, George Keith Parish, Lawrence Russell Steward, Robert Shelby Tucker
Patented Case
View Patent ↗
Granted: Aug 24, 1999
Filed: Dec 17, 1996
Inventors
Jan Richard DeMeerleer
George Keith Parish
Lawrence Russell Steward
Robert Shelby Tucker
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.