Granted Patent
Utility
US 6,377,490 · App. 09/677,844
Nonvolatile semiconductor memory device and method for driving the same
Inventors:
Keita Takahashi, Masafumi Doi, Hiroyuki Doi, Nobuyuki Tamura, Yasushi Okuda
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Oct 3, 2000
Inventors
Keita Takahashi
Masafumi Doi
Hiroyuki Doi
Nobuyuki Tamura
Yasushi Okuda
Assignee (at issue)
Matsushita Electronics 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.