Granted Patent
Utility
US 5,770,489 · App. 08/444,026
Method of making a compound semiconductor field-effect transistor
Inventor:
Kazuhiko Onda
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: May 18, 1995
Inventor
Kazuhiko Onda
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.