Granted Patent
Utility
US 5,933,367 · App. 09/040,746
Erasing method in nonvolatile semiconductor memory device
Inventors:
Makoto Matsuo, Ayumi Yokozawa
Patented Case
View Patent ↗
Granted: Aug 3, 1999
Filed: Mar 18, 1998
Inventors
Makoto Matsuo
Ayumi Yokozawa
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.