Granted Patent
Utility
US 5,506,421 · App. 07/980,753
Power MOSFET in silicon carbide
Inventor:
John Williams Palmour
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Nov 24, 1992
Inventor
John Williams Palmour
Assignee (at issue)
Cree Research 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.