Granted Patent
Utility
US 6,469,343 · App. 09/679,650
Multi-level type nonvolatile semiconductor memory device
Inventors:
Hirotomo Miura, Yasuo Sato
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Oct 5, 2000
Inventors
Hirotomo Miura
Yasuo Sato
Assignee (at issue)
NIPPON STEEL 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.