Granted Patent
Utility
US 4,743,957 · App. 06/858,984
Logic integrated circuit device formed on compound semiconductor substrate
Inventor:
Hiromitsu Hirayama
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: May 2, 1986
Inventor
Hiromitsu Hirayama
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.