Granted Patent
Utility
US 5,673,222 · App. 08/666,979
Nonvolatile semiconductor memory device
Inventors:
Katsumi Fukumoto, Masamitsu Taki
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Jun 20, 1996
Inventors
Katsumi Fukumoto
Masamitsu Taki
Assignee (at issue)
SHARP KABUSHIKI KAISHA
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.