Granted Patent
Utility
US 6,559,470 · App. 10/028,085
Negative differential resistance field effect transistor (NDR-FET) and circuits using the same
Inventor:
King Tsu-Jae
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Dec 21, 2001
Inventor
King Tsu-Jae
Assignee (at issue)
PROGRESS 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.