Granted Patent
Utility
US 6,728,158 · App. 10/027,461
Semiconductor memory device
Inventors:
Hiroyuki Takahashi, Eiji Haseo
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Dec 21, 2001
Inventors
Hiroyuki Takahashi
Eiji Haseo
Assignee (at issue)
NEC 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.