Granted Patent
Utility
US 6,320,210 · App. 09/318,735
Hetero-junction field effect transistor
Inventor:
Yuji Ando
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: May 26, 1999
Inventor
Yuji Ando
Assignee (at issue)
NEC CORPORATION
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.