Granted Patent
Utility
US 6,597,621 · App. 09/791,778
Multi-bank semiconductor memory device
Inventors:
Takaharu Tsuji, Akinori Shibayama
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Feb 26, 2001
Inventors
Takaharu Tsuji
Akinori Shibayama
Assignees (at issue)
MITSUBISHI ELECTRIC CORPORATION
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.