Granted Patent
Utility
US 5,331,644 · App. 07/727,990
Decoder checking circuits suitable for semiconductor memories
Inventors:
Satoshi Ishii, Yuki Ushida
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Jul 10, 1991
Inventors
Satoshi Ishii
Yuki Ushida
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., 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.