Granted Patent
Utility
US 5,327,385 · App. 08/019,899
Method of erasure for a non-volatile semiconductor memory device
Inventor:
Kenichi Oyama
Patented Case
View Patent ↗
Granted: Jul 5, 1994
Filed: Feb 19, 1993
Inventor
Kenichi 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.