Granted Patent
Utility
US 5,774,148 · App. 08/545,126
Printhead with field oxide as thermal barrier in chip
Inventors:
Robert W. Cornell, Lawrence Russell Steward
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Oct 19, 1995
Inventors
Robert W. Cornell
Lawrence Russell Steward
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.