Granted Patent
Utility
US 6,570,802 · App. 10/008,709
Semiconductor memory device
Inventors:
Hidefumi Ohtsuka, Yuji Yamasaki, Tomonori Fujimoto
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Nov 13, 2001
Inventors
Hidefumi Ohtsuka
Yuji Yamasaki
Tomonori Fujimoto
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.