Granted Patent
Utility
US 5,394,000 · App. 08/137,453
Trench capacitor structure
Inventors:
Joseph P. Ellul, John M. Boyd, Michael Rowlandson
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Oct 7, 1993
Inventors
Joseph P. Ellul
John M. Boyd
Michael Rowlandson
Assignee (at issue)
Nortel Networks Limited
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.