Granted Patent
Utility
US 5,880,499 · App. 08/919,681
Memory cell of a nonvolatile semiconductor device
Inventor:
Ken-Ichi Oyama
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Aug 28, 1997
Inventor
Ken-Ichi Oyama
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.