Granted Patent
Utility
US 6,697,992 · App. 09/923,405
Data storing method of dynamic RAM and semiconductor memory device
Inventors:
Yutaka Ito, Hidetoshi Iwai
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Aug 8, 2001
Inventors
Yutaka Ito
Hidetoshi Iwai
Assignee (at issue)
HITACHI, 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.