Granted Patent
Utility
US 6,555,872 · App. 09/718,816
Trench gate fermi-threshold field effect transistors
Inventor:
Michael W. Dennen
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Nov 22, 2000
Inventor
Michael W. Dennen
Assignee (at issue)
Thunderbird Technologies, 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.